Wi-Fi and charging at the airport: the digital survival guide

USB ports: theoretical risk, practical precaution

Juice jacking — data theft via a compromised public USB cable — is a risk that authorities continue to flag for caution, not because it's been observed on a large scale. The most effective precaution remains the simplest: carry a charge-only cable (which doesn't transmit data) or rely on a wall outlet, universally safer than any shared USB port.

Power banks: how much to carry and what to know

Traveling with your own power bank solves the problem at its root, but airlines impose specific limits on transportable capacity and the number of units allowed in carry-on luggage. Before departure, it's worth checking these limits in detail: our guide on power banks on planes: what you need to know before departure summarizes the updated rules.

Public Wi-Fi and VPN

Open Wi-Fi networks at terminals — including official airport ones — don't encrypt traffic by definition: anyone on the same network can, in theory, intercept unprotected data. Enabling a VPN before making a payment or accessing online banking is the precaution that truly reduces concrete risk, more than any power outlet precaution.

Organizing cables and chargers in carry-on

Keeping chargers and cables in an accessible outside pocket of your backpack avoids having to dump your entire bag on the gate floor to retrieve a cable. It's a minor detail, but on a flight with a tight connection, it can make the difference between charging your phone calmly or rushing to boarding with a dead battery.

If you need to make a payment or check online banking while connected to terminal Wi-Fi, wait until your VPN is active or switch to mobile data: it's the single habit that protects most, far more than worrying about public USB ports.