I am currently looking for a USB stick with hardware write-protection that is small enough to fit in my keychain.

Searching the internet I could only find the Kanguru SS3, which has a slightly too large form factor.

  • What is your budget, and how big is too big?
    – 0-60FPS
    Mar 23, 2017 at 3:50
  • Something like the Kingston SE9 would be nice. It doesn't have to be cheap.
    – glopes
    Mar 23, 2017 at 7:37

1 Answer 1


It seems there are no USB sticks with hardware write switch of such small form-factor as Kingston SE9 (39mm of length). There are some alternatives smaller (shorter) than Kanguru SS3.

Some alternatives:

  • searching for a small SD card USB reader
  • there are smaller form-factor USB pendrives with customisable fingerprint protection

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