WIEGAND TO OSDP READER UPGRADE

Your Access Control Readers Are Transmitting Credentials in Plain Text. That Stops Here.

Texas-licensed integrators, License #B19847, upgrading legacy Wiegand infrastructure to OSDP AES-128 encrypted reader communication across Texas since 2010. HID, Allegion ENGAGE, Dormakaba, and Mercury Security platforms.

License #B19847 · Family owned since 2010

Pros On Call technician replacing a legacy Wiegand reader with an OSDP-encrypted reader at a Texas commercial facility
License #B19847
4.9 Stars Google
24/7 Support
Access Control Specialist

WHAT OSDP DELIVERS OVER WIEGAND

AES-128 Encrypted Communication

Every transmission between reader and panel is encrypted. Intercepting the cable gives an attacker ciphertext that changes every session. Wiegand gives them the raw credential ID in plain text.

Tamper Detection

OSDP readers report physical tamper events and communication anomalies to the panel. An attacker placing a covert relay device on your reader generates a tamper alert before they capture a credential.

Remote Firmware Updates

OSDP bidirectional communication lets the panel push firmware updates to readers remotely. Wiegand readers require physical access to the reader for any configuration change.

Federal and Compliance Standard

OSDP v2 with Secure Channel is the required protocol for new federal FICAM PIV card reader installations. Texas organizations facing NIST 800-116 or federal contractor requirements need OSDP.

HOW A WIEGAND TO OSDP UPGRADE WORKS

  1. Panel and Firmware Compatibility Audit

    We document each panel model and firmware version to confirm OSDP support. Some panels support OSDP natively; others require a firmware update or a port module. We identify any panels that need replacement before hardware is procured.

  2. Reader Selection and Pre-Configuration

    OSDP reader models selected for each door based on credential format, form factor, and panel brand. Readers pre-configured in the shop: OSDP address, baud rate, Secure Channel key loaded. Door-level work is faster with pre-staged hardware.

  3. Door-by-Door Reader Replacement

    Each door replaced sequentially: legacy reader removed, new OSDP reader mounted, RS-485 wiring confirmed or re-run, panel port configured for OSDP. Existing wiring reused where cable assessment confirms compatibility.

  4. OSDP Secure Channel Verification

    Each reader verified for encrypted communication using panel diagnostics. Tamper detection tested at each door. Communication logs reviewed to confirm no Wiegand fallback is occurring.

  5. Documentation and Security Posture Report

    Written record of reader models, OSDP firmware versions, and Secure Channel configuration per door. Security posture summary delivered for compliance teams and security directors.

THE RELAY ATTACK PROBLEM

A $50 Device Can Capture and Replay Any Wiegand Credential. OSDP Closes That Door.

Wiegand readers broadcast credential IDs on two unencrypted wires. The signal is a static number -- the same number every time the card is presented. A relay attack device, available for under $50, captures that number when placed near your reader and retransmits it at any door on your building, at any time. The panel sees a valid credential and opens the door.

This is not a theoretical attack. Security researchers demonstrated it against major US government facilities in 2011, leading directly to the FICAM requirement for OSDP. Texas commercial facilities with legacy Wiegand infrastructure carry this risk every day. OSDP Secure Channel eliminates it by replacing the static broadcast with an AES-128 encrypted session that changes with every transaction and mutually authenticates the reader and panel.

  • Relay attack prevention: encrypted session tokens cannot be captured and replayed
  • Mutual authentication: panel and reader verify each other, not just the card
  • Physical tamper reporting: covert reader installation triggers an alert before capture occurs
  • Federal FICAM and NIST SP 800-116 compliance for PIV card reader deployments

WIEGAND VS. OSDP VS. OSDP SECURE CHANNEL

Feature Wiegand OSDP (basic) OSDP Secure Channel
Communication direction One-way (reader to panel) Bidirectional Bidirectional
Encryption None None (optional) AES-128 mandatory
Relay attack resistance None Low High
Tamper detection None Yes Yes + alert
Remote firmware update No Yes Yes
Federal FICAM compliant No Partial Yes

Customers, on the work

Texas reviews.

Five-star work, in the customers' own words. No edits, no filters.

4.9 average across 1,423 reviews on our Texas Google profiles
  • I had “Pros On Call” change the locks on my home that I recently purchased. It was easy to get a hold of them, they made an appointment quickly and did a great job for a fair price. I had them come out about two weeks later and put a deadbolt lock on my front door as well and again - easy to get a hold of, they had to order an aged bronze deadbolt lock 🔐 but once it arrived they came out quickly, did a great job, were neat and it was a fair price. I highly recommend “Pros On Call” for all of your Locksmith needs! 5 Stars ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ for sure!!

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    Joe

    2 months ago

  • This guy come and help me at the last moment and be very professional and fair price

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    Sayed H.

    4 months ago

  • Josh was amazing! I called him when I was locked out of my car, and he arrived within 20 minutes. He was professional, fast, and had my car unlocked in no time. The whole process was stress free, and his pricing was fair. I really appreciate how quickly he came to help. Highly recommend Josh if you ever need a reliable locksmith!

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    Samantha C.

    5 months ago

  • Josh was awesome, he came to the rescue and I didn’t have to wait longer than 30 minutes in total. He also was incredibly kind and understanding of my situation. Dropped off my kids, and somehow my key fab went missing! Also gave me a discount!!

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    Nicole S.

    a year ago

  • It sucks they charge an inconvenience fee of 49.00. Which I wish you would have mentioned this on our intial call. Transparency would have been to say hey we charge an inconvenience fee. Never once was this mentioned. When we spoke with the representative all she said was the locksmith will call you with a price. Never once did she say we take your payment info so we can charge you an inconvenience fee. If that was mentioned then this would have been handled differently. She made it seem like we need a card on file to help. Then they attempted to debit my card twice for two separate transactions for 49.00. I understand you run a business. But transparency is key. I specifically asked her what I would be charged for never once did she mention this. Lesson learned. Update***she reached out in regards to my Google review. Although I attempted to resolve per phone call. Shameless.

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    Alex B.

    3 months ago

  • Great service Ermi took less than 2 minutes. Thank you so much!

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    Jennifer S.

    4 months ago

  • Excellent service and high quality items! Roland was able to get me this key fob AND program it for a great price. Rechargeable fob is a lot more convenient than having to replace the battery every time it dies. Thank you !

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    Hector O.

    10 months ago

  • I have been a customer of pros on call for like over 2 years about and have had to call on them about 6 times. I had used several other locksmith in the prior 15 years but once Roland , one of many these pros came over I never use sny other locksmith service. I am very happy with this company I usually asks for Roland because I know him best and I have developed a kinda professional friendship with him but you can't lose no matter who it is that helps you. All top notch pros. I have called days and night. I am elderley snd lost my keys and I had some stolen. I would tell anyone that ask to call this company. You won't find any better. Here are a few keys Roland msde for me. I have 3 cars an a home. I have to locate my home keys do I didn't have the opputunity to take a picture of them but these here are greal examples.

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    Kim V.

    10 months ago

  • Super great experience! Roland was very fast at getting to where I was. Overall he did an amazing job! Plus super affordable prices, you can't beat that! 10/10

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    Shyla R.

    10 months ago

  • Locksmith Roland provided exceptional service at a affordable price point, and I highly recommend both the individual and the company. 💯

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    Rolando R.

    10 months ago

  • I had Zach come out to the property that I purchased out in Luling, Texas. It’s about 10 acres, and it has a garage with a corroded lock. Out of all the companies I have called, which is roughly 5 to 6. He was able to take my call, head out the next day, and take care of the corroded lock I need fixed on my property. He was extremely professional and helped me by giving me instructions on how to operate the lock as well! I’m in the military and not able to be in the area, so he was very understanding and professional. Highly recommend!

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    G S

    a month ago

  • Josh was amazing!!! Got us back up and running with two new key fobs in less than 30 mins. He definitely knows his business and has the experience. Got a great deal and I will definitely be calling him the next time we are in need of assistance again. Thank you, Josh!

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    TxCountryGirl

    2 months ago

  • Josh was a really good technician fast and prompt.... If this ever happens again (hopefully it doesn't )I'll be calling him.

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    Ssk W.

    2 months ago

  • Zach got to me asap and even called to make sure we were communicating the right location of my truck! Within 10 minutes it was open and running! He’s the man! Thank you so much for the quick turnaround!

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    mark V.

    3 months ago

  • Their response time was great. Orlando did a great job. No replacement parts were needed and repairs took an hour. I was badly disappointed at the high bill, even with a military discount. Maybe that is why I couldn’t get an approximate estimate before Orlando came. Bottom line : good work, too expensive

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    Frank K.

    3 months ago

  • Very helpful and super friendly. They were able to unlock my door in minutes at an affordable price! Even offered spare key services!

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    Isaiah V.

    a week ago

  • Miguel was very professional and efficient in his work he was very easy to work with and quick in doing his job

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    Jhantem T.

    2 weeks ago

  • The locksmith was quick and very efficient, got me back on the road on no time!

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    Abraham R.

    3 weeks ago

  • He was very fast, was able to make me a key and a spare when I was stranded

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    Nora P.

    a month ago

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WIEGAND TO OSDP UPGRADE FAQ

What is the difference between Wiegand and OSDP?

Wiegand is a 40-year-old unencrypted, one-way communication protocol used by the majority of card readers still deployed today. The reader transmits a static credential ID to the access control panel over a two-wire unshielded cable. That transmission can be intercepted and replayed by inexpensive hardware available online. OSDP, the Open Supervised Device Protocol ratified by SIA in 2011 and updated through OSDP v2 in 2020, uses RS-485 or RS-232 with AES-128 encrypted bidirectional communication. The panel and reader authenticate each other, tamper events are reported, and reader firmware can be updated remotely. OSDP is the current standard for new federal government installations under FICAM.


Why should a Texas commercial building upgrade from Wiegand to OSDP?

Three reasons drive most OSDP upgrades in Texas. Security: Wiegand transmissions can be intercepted with a relay attack device that fits in a jacket pocket. An attacker places a covert reader near your legitimate reader, captures a valid credential ID, and replays it at a door. OSDP with AES-128 encryption closes this attack vector. Compliance: NIST SP 800-116 and federal FICAM specifications require OSDP for PIV card readers. Texas healthcare and financial organizations facing audits increasingly see Wiegand cited as a finding. Capability: OSDP enables remote reader firmware updates, reader health monitoring, and bi-directional communication that supports features like LED and audio control from the panel.


Can we upgrade to OSDP without replacing the entire access control system?

In most cases, yes. If your access control panel manufacturer supports OSDP on the existing hardware or via a firmware update, you replace the reader heads at each door while keeping the existing panel, wiring, and access management software. HID readers, Allegion ENGAGE readers, and Dormakaba readers all offer OSDP-native models that replace legacy Wiegand readers using the same mounting footprint in many cases. We audit your panel and firmware version first to confirm OSDP support before recommending a reader-only upgrade path.


Does OSDP require new wiring?

Not always. OSDP uses RS-485 two-wire balanced signaling, which in many installations can run over the same cable that served the Wiegand reader. The key constraint is cable length and the number of devices on a bus. A certified low-voltage cabling assessment determines whether existing runs support OSDP at the distances in your installation. In some buildings, particularly older ones with long cable runs, a cable upgrade or daisy-chain topology change is needed. We identify any wiring work during the site survey phase, before hardware procurement.


What is OSDP Secure Channel and how does it protect against relay attacks?

OSDP Secure Channel (OSDP v2 feature) establishes an AES-128 encrypted session between the reader and the panel using a pre-shared key. Even if an attacker intercepts the RS-485 communication, they receive ciphertext that changes with each transaction. Replay attacks are blocked because each message includes a session counter. Tamper detection is built in: if the reader loses communication with the panel, or if a communication anomaly suggests a man-in-the-middle, the panel logs a tamper event and can trigger an alert or lock the door. Wiegand has none of these protections.


Which access control panels currently support OSDP?

Most modern enterprise panels support OSDP: Mercury Security EP1502 and EP4502 series, Lenel LNL controllers (select models with firmware updates), HID Edge EVO, Allegion AD-series panels, and Dormakaba controllers all support OSDP natively or via firmware update. Cloud platforms including Brivo and Avigilon Alta support OSDP readers at the hardware level. Legacy panels from older generations of Software House, Bosch, and Honeywell typically require a panel replacement to add OSDP support. We confirm compatibility during the site survey.


How long does a Wiegand to OSDP upgrade take?

A reader replacement at a single door typically takes 30 to 60 minutes for a technician who has done the firmware configuration ahead of time. A building with 20 doors can be completed in one to two days, working door by door with no system downtime because we reconfigure each reader before swapping it. We coordinate with your security team to schedule sensitive doors (server rooms, executive areas) during low-traffic windows. Larger multi-site upgrades are phased over multiple weekends.


Does OSDP upgrade affect how employees use their cards?

No. From the card holder's perspective, nothing changes. They present the same card or mobile credential to the reader and the door opens on valid authentication. The difference is in what happens between the card and the panel: the communication is now encrypted and authenticated instead of a plain broadcast. If you are upgrading cards simultaneously to a higher-security credential format like Seos or FIDO2, there is a brief transition period, but card-holder behavior does not change.


ACCESS CONTROL PLATFORMS

Access control platforms we install + service

Additional platforms we service:

  • HID Global access control systems
  • Avigilon Alta cloud access control
  • Lenel OnGuard enterprise access
  • Alarm.com smart access

Pros On Call installs and services access control systems from the leading platforms in commercial security. Contact us to discuss compatibility with your building's existing infrastructure.

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Upgrade Your Legacy Wiegand Readers to OSDP

Texas-licensed integrators, License #B19847. We audit and upgrade Wiegand access control infrastructure to OSDP Secure Channel across Austin, Houston, Dallas, San Antonio, and 36 additional Texas markets.

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