Digital signing software SDK for contactless readers


Digital signing of documents is the future of online business.
Digital Logic Ltd. is one of the first companies in the world to implement digital signing solution with contactless RFID cards.
We expect that old systems which still use contact cards will soon become a thing of the past.

µFR Signer software supports both RSA and ECDSA cryptographic algorithms for digitally signing files.
Software is intended to be used with our µFR Series of NFC devices: Nano, Classic, Classic CS and Advance.
µFR Signer works with all cards which support RSA and ECDSA. In our demonstration video we used JCOP card J3D081.

Software download

Software Development Kit (SDK) is available for download from our software repository.


µFR Series NFC Reader, µFR firmware version 3.9.53 or higher, µFR library version 4.3.3 or higher.

Video demonstration:

Software screenshots:

Digital Signing using NFC RFID Reader uFR Classic CS 2

Digital Signing using NFC RFID Reader uFR Classic CS 1

Additional links:

To browse or download other software examples visit our Gitlab Software repository.

For purchasing our devices, visit our official online store.

Feel free to contact our technical support if you have any questions about our software examples.