iRevo, the company that makes the Korea #1 Gateman brand of digital locks claimed as part of their company philosophy that no products are newly introduced into the market without having key differentiators and ensuring consumer value.
Take for instance, the Gateman Z10 fingerprint digital lock that comes with pin code access. The input number pad is the only digital lock in the market that addresses consumer's worry for traces of fingerprints left on the number pad. Gateman has specially manufactured a brushed matt surface that does not attract finger prints.
Note: This feature is also found in the A20 series of iRevo Gateman digital lock.