ISO 17839-2:2015 defines the following:
- Dimensions of a Biometric System-on-Card type S1 and type S2;
- Position and size of the biometric capture device;
- Minimum requirements to a Biometric System-on-Card with respect to
- mechanical durability, and
- man-machine interface and ergonomics.
The standardization of other on-card devices such as an electronic display or a keypad is outside the scope of this part of ISO/IEC 17839.