While the risk from using public USB power charging stations at airports, hotels, and other locations might be small, a USB port is a gateway into a device, and allowing any scabby charging station access to my devices seems overall like a bad idea. Where I can I like to use my own chargers of power banks, but for those occasional times when I can’t do that, I carry on my keyring a small USB data blocker.
There are a number out there, but the brand I trust is PortaPow (because I’ve tested them and taken them apart to see how they work). PortaPow’s 3rd-gen USB data blocker blocks any and all data transfer, but the built-in chip detects the type of device which is connected and swaps between Apple, Universal and Samsung charging specifications, thus enabling the fastest charge possible.
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