Explosives trace-detection portal machine

An explosives trace-detection portal machine is a special machine that helps to identify any dangerous materials that could harm people. It looks like a big metal arch or a doorway and people walk through it to get to the other side.

The machine has a special detector that can pick up tiny particles of explosives that might be on a person's body or clothes. These particles are called "traces," and the machine can find them even if they can't be seen by the unaided eye.

To use the machine, you have to stand in line and wait your turn to step through the arch. Once it's your turn, you take off anything that could interfere with the machine's reading like jackets, belts, and shoes. You will also be asked to put any metal objects or electronics like phones, keys, or bracelets in a tray that will be scanned separately.

By standing still and walking through the arch, the machine works its magic and searches your body for any traces of explosives. It will beep or flash if it detects anything suspicious. If this happens, security personnel will investigate further to ensure that everyone's safety is being maintained.

Overall, the explosives trace-detection portal machine helps to ensure that everyone who enters certain areas or events is free of any dangerous or harmful materials.