It’s a familiar scene from every police procedural: In one brightly lit room, a perp is being questioned. In an adjacent room ...

One classic set you’ll see in most vintage mystery movies is an interrogation room with a “two-way” mirror in one wall. This cool gadget lets the witnesses see the suspects from another room while the ...

Beccy holds a PhD in Biological Science, a Master’s in Molecular Biology of Parasites and Disease Vectors, and a Bachelor’s in Human Biology and Forensic Science. Beccy holds a PhD in Biological ...

TikTok is full of people “discovering” spy mirrors in their hotel rooms and Airbnbs. Or, more often, they use a normal hotel mirror to demonstrate a trick that supposedly reveals such mirrors.

You've finally reached your hotel room and just want to take a shower and change, but you can't shake off this eerie feeling; it's like you're being watched or just a general feeling of being unsafe.

EDN Design Ideas (DI) published a design of mine in May of 2025 for a passive two-way current mirror topology that, in analogy to optical two-way mirrors, can reflect or transmit. That design ...