A few months back at the Black Hat Security conference Cody Brocious demonstrated how you can easiy open an Onity hotel room lock, the standard system used in many hotel chains, with an Arduino but it was bulky setup and comletely obvious if anyone saw him pull out a lot of electronics. Here’s how you can fit that system in a dry erase marker. More »
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Build an Arduino-Based Hotel Room Master Key Housed in a Dry Erase Marker
