Common game you should always remove from your bags at airport security

Machines that scan our luggage could raise an alarm over this packet

If you have a long flight ahead or fancy some screen-free entertainment, bringing a pack of playing cards can seem like a good idea to beat boredom. But they can cause a security issue at airports, which could mean you’re held up while items are checked.

Many items are banned for being sharp and potentially dangerous, but even innocuous items such as corkscrews could be confiscated. But, some seemingly harmless items could also raise an alarm with security staff and require further checks.

The Transportation Security Administration (TSA), which oversees airport security in America, told Travel and Leisure that any deck of cards, from classic playing cards to games to collectables like Pokémon, could trigger a security red flag if they are picked up by scanners that notice the suspicious look of the otherwise innocent item.

Ian Cava from the TSA explained that the shape of the cards can trigger additional checks and make them appear as if there’s something hidden inside. He said: “When items are stacked tightly together, like decks, binders, or graded slabs, the X-ray image can make it difficult for officers to confirm there are no prohibited items concealed in or around them.”

Even family-friendly games like UNO have a strong chance of triggering alerts. A standard UNO deck has 112 cards, making it twice as thick as a regular 52-card deck. The X-ray operators cannot see through the thick stack, so they must check it for hidden contraband.

Although the advice comes from the TSA, people travelling from UK airports can also follow the guidance, as the security processes are quite similar. For an X-ray scanner, a tightly packed deck appears as an organic solid block that could be flagged as a potential explosive, electronic device, or dense liquid, all of which require further checks.

A standard bag search usually takes up to 15 minutes once your bag reaches the inspection table. However, during peak travel times, the queue of bags waiting to be manually checked can back up, significantly extending your wait.

Many UK airports are currently upgrading to advanced 3D scanners. If your security lane uses these newer machines, you often do not need to take anything out of your bag, drastically reducing false alerts. Because the rollout is not happening all at once across every UK airport, some lanes still use older X-ray machines that strictly require manual checks for dense items like cards and games.

Tips to get through security faster with playing cards:

To avoid delays, treat playing cards like anything else you’d take out of your bag. Place the card box in a tray to be checked rather than waiting for the security alert to be triggered.

People can also avoid issues by not packing cards in metal tins or carry cases – typically provided or bought for collectables. Use a cardboard or plastic case because metal tins are harder to scan.

Putting any of your board games and cards in hold luggage is the safest way to avoid security delays, as they don’t go through manual bag checks that require you to wait. While this completely eliminates the risk of your hand luggage being pulled aside for a card or game check, passengers risk having their items bent, crushed, or lost if the airline misplaces their suitcase.