Transistor Design Disguises Key Computer Chips from Hackers

A hacker can reproduce a circuit on a chip by discovering what key transistors are doing in a circuit — but not if the transistor type is undetectable. Engineers have demonstrated a way to disguise which transistor is which by building them out of a sheet-like material called black phosphorus. This built-in security measure would prevent hackers from getting enough information about the circuit to reverse-engineer it.