I renetly came across a pair of Fake Pen Drive by way of an advertisement online.
The best way to identify the fake pen drive (which looks almost the same as genuine in the attached packing) is to format the pen drive.
1. A fake pen drive would either refuse to format (stuck at 99%) or would be extremely slow.
2. The seller of fake pen drive shall not give you a bill /cash memo
3. Do not be duped by cheap price of the FAKE pen drive.