Shield
What is it?
Pacemaker "Shield"
What is a Pacemaker "Shield"?
A pacemaker shield is comparable to a computer's antivirus. It is a device that is wearable that has the capabilities to emit a jamming signal when active hackers try to establish an unauthorized wireless link between a pacemakers and a remote terminal.
How it works?
It works as an intermediary between the physician operator and the device—a pacemaker, for example—by acting as a midpoint where the data can be encrypted. The first of the shield's two antennas broadcasts a randomly generated jamming signal at the same frequency as the pacemaker's transmissions, masking the information contained inside the transmission to anyone who might be trying to access it covertly. The second antenna contains not only a transmitter, but also a receiver. That transmitter broadcasts an "antidote signal" that cancels out the jamming signal and allows its receiver to decode the information sent by the pacemaker. Only the shield knows the content of the random jamming signal, and the only place that jamming signal is canceled out is the receiver in antenna No. 2.