3 ms·
Could also be mm wave maybe? Cheap mm wave security gates and similar tech are ubiquitous now
by CGMthrowaway 1y ago
Could also be mm wave maybe? Cheap mm wave security gates and similar tech are ubiquitous now
- swores 1y agoI'm pretty sure it was just marks on the back of the cards that glasses/contacts then converted into an xray-like view, not any actual technology for seeing through the cards.