Bluetooth Hacking?

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The RC632 is a multi-protocol 13.56MHz RFID reader ASIC produced by Philips/NXP.

Unfortunately the datasheets are only available in a slightly 40bit scrambled version, which will take you some five days up to first being able to open it. But it's freely downloadable from

In case you are looking trying to open a 40bit encrypted PDF that you have lost the key for, try searching for a key in block# 37635, many PDFs use that block to store the key.

An unencrypted older version is available from

There's also a "short form specification" for the RC632 at that's freely downloadable.

There is a public data sheet at (Rev. 3.5 — 10 November 2009)