A variation of the magstripe - the barcode card contains a standard barcode that can be read by an optical reader, the benefit of the optical reader is that it is contactless and will last longer than a magstripe, the one huge downside is that the card can be duplicated by photocopying it!

By far the most common method for access control is the keypad, folllowed by the remote control, however expect to see a surge in popularity of the biometric thumb reader as the device of choice as the cost of the technology falls and the read rates speed up.

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