According to the article, the dime-sized RFID tag, called Novalert, fits on the back of an implant. If it senses a silicone leak, the device emits a signal. Upon a google search of "Novalert," there is a San Francisco-based start up company named Novalert Inc. Its limited Web site states that the company is developing technology to monitor and control implantable devices, with a near-term focus on aesthetics. It sounds like it could be related to the device discussed in the Times piece, but the connection hasn't been confirmed.