TSA Hack: How to Bring Water Through Airport Security

A popular travel hack allows passengers to bring a full bottle of water through US airport security by freezing it first, as the TSA permits frozen liquids if they are solid at screening. However, if partially melted, they must comply with the 3-1-1 liquids rule. While some travelers find this hack useful, others prefer using airport water dispensers. The hack is not universally applicable, as different countries have varying regulations on frozen liquids.