Lynx is an information security startup and the developer of the Lynx stamp, a product that secures paper-based documents with a digital signature using a handheld biometric IoT signing device. The entire cryptographic process is conducted on the Lynx hand-held signing device, which generates a digital signature based on the encrypted document’s content, the signer’s ID, and the event date and location. This digital signature, together with the URL to the cloud storage, is incorporated into a QR code which is printed on the physical document by the integrated printer in the Lynx stamp.