Infrared barriers and bands
Electronic photo cards and security strips
The security bands can be with micro-ructors inside and external rubber, such as a micro-ructor with a cable and spring inside with the external rubber cover, there is also an infrared cell with an emitter and receiver that at the same time pressing the rubber cuts the infrared beam, ETC.
The cells can be with a reflector (Mirror) or an emitter and a receiver that emits the infrared ray, there are also a single emitter receiver in the same equipment (direct reflection) these do not need any single emitter receiver.