Upmarket iPhone case maker CalypsoCrystal has added contactless door key technology to its range of cases for the iPhone 5, iPhone 4 and iPhone 4S.
CalypsoKey is available as an option with the company's Ring, Loop and Cabrio cases and includes a dual band 13.56MHz and 125kHz antenna built in between the case layers. On receipt of a new case, the company says, customers need to "set your locking system into programming mode with a master key (see your locking system manual for instructions) and program the lock to allow access to your new CalypsoCase with CalypsoKey. You can now use your CalypsoCase with CalypsoKey to easily enter your door."
A video shows the case in use:
The cases cost between €119 and €129 with CalypsoKey, and €89 to €99 without.