* KeyPad Plus required for Pass / Tag
Perfect on a keyring (alongside your @MastDigitalUK rubber keyring), AJAX's encrypted and authenticated tags are small & sturdy to fit conveniently onto keychains providing rapid & contactless entry into homes, offices and other sites... or all at once. Both the fobs & key cards from AJAX can be configured to allow access up to 13 different AJAX hubs.
All specs include:

7g Weight
45×32×6mm Dimensions
Flexible Access Permissions via App Administrator
DESFire 128-bit Encryption & Copy Protection
Configurable up to 13 AJAX Hubs