update Security researchers have canceled a talk on the flaws of RFID-equipped building access badges after receiving legal threats from a major manufacturer.

Researchers from security services firm IOActive planned to demonstrate that the commonly used identification cards can easily be duplicated, posing a serious risk to those who rely on such systems for security.

The talk, slated for Wednesday at the Black Hat DC Briefings & Training event in Arlington, Va., was canceled Tuesday after IOActive said it received legal threats from HID Global, a major seller of access control systems.

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