I am using the Padlock 2 as a data safe for my holiday trips on a Samsung S4 Active and a Samsung Galaxy Note 10.1 2014 Edition as well as cross-platform on Windows, Linux and IOS. An up to 10-digit sequence complicates unauthorized users to use my stored data. It is beside the point for my application that the only USB 2.0 Stick uses. In the Corsair Padlock 2 Top Questions to there next to instructions for use, a detailed description of the "Hacking Protection". Update as of 05/17/2014: Unfortunately, caused the stick to varying PC's / Notebook's with WIN 7 sporadically when first inserting a "BlueSreen". When you restart your computer this problem no longer occurs. Then indeed to see the stick in the Disk Management as Disk, but is not assigned a drive letter! A solution could not be found. However, on other PCs and WIN 8.1 This stick is working without any problems. Therefore, instead of 5 only 4 stars!