Sentences with phrase «lasers scan bar»
Lasers scan bar codes at the supermarket and record sound on compact disks.
https://www.scientificamerican.com/ Not exact matches
Like a scene from a futuristic movie, Nangonya pulled out a laser to scan a bar code on the other inspector's wrist and then his own.
Other technologies such as bar - coding and laser scanning to identify users could also verify compliance with export licences.