What It Means If TSA Swabs Your Phone Or Laptop

TSA and airport security screenings are a way of life and have been for years. There are many things to consider before you cross through them — for example, which devices are acceptable to bring and which are not. TSA rules do change from time to time, so it's always a good idea to brush up on them before you visit somewhere new. It's also important to remember the one electronics rule that could change your experience: Always make sure your phone and other devices can be powered on. The TSA may check them to make sure they work properly. But every once in a while, the TSA may also use swabs, checking everything from your hands to your phone or your bags.

The swabs are usually done at random, but they may also happen if a TSA officer suspects something is off. They're meant to test for traces of certain chemicals on you or your belongings, particularly substances related to explosives and other dangerous compounds. For instance, they might be looking for nitrates or glycerin, two common "precursor" ingredients used in homemade explosives. Oddly, glycerin can also be present in certain hand sanitizers, so it helps to know how and if you may be affected. In short, if they swab you or your belongings, they're checking for trace elements of dangerous or nefarious stuff.

As a general rule, always follow the instructions given to you by the TSA officer, as this will both reduce friction and help prevent implicating you further. They can issue a notice of violation for non-compliance, which is a civil matter, not a criminal one, but may still come with some hefty fines. Ultimately, follow the instructions given and the officer will handle the swab process, and may or may not explain why they're doing the test.

If you feel uncomfortable with a public screening in front of everyone, you can request the process to be private. It may take a little longer and the TSA officer will likely escort you to a remote office, but it's good to know the option is available. Most of all, it's important not to panic and remember that screenings are a normal part of the security process. Although the officers may have picked up on suspicious behavior, they're not usually singling you out, specifically — they're doing their job. 

As soon as the swab is complete and they've tested for related chemicals, the TSA agent should let you pass through security uneventfully, as long as nothing nefarious is detected. If the test comes back with a positive result, which can be a false positive, the officer will most likely ask more questions and may do a more thorough check of your bags and belongings. They'll be looking for items the bag scanners were unable to see, if your bags went through a scanner, and otherwise double-checking for good measure. Again, follow instructions and you should be all right since the officers are aware of false positives.