Space-time scanner
A space-time scanner was a small, hand-held device which Temporal Agent  used. It operated by projecting what he termed a "Temporal Observatory".

In 2151, Silik attempted to steal the scanner and deliver it to the 's mysterious benefactor, which would have provided his faction an advantage in the Temporal Cold War. Captain Archer destroyed the device with a phase-pistol, rather than let it fall into the wrong hands. ()

Sensor technology
Time travel technology