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.

The idea of combining the new technology of the phone and the old technology of the key fits quite well within my work, the only issue I see with this product is when you lose your phone, you’ve also lost your keys.


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