Intercom Keyless Entry
Here is a crafty hack that converts a normal building intercom into a personal wireless keyless entry system. Video after the jump. “Now don’t tell the co-op board, but I crafted a plan to ditch my Mul-T-Lock key for good. My apartment building, of course, uses an intercom system to remotely unlock the front door for guests, deliveries, etc. This keychain upgrade gets me in the front door… keylessly. The

