I got this drive because its reputation for solid security and smooth functionality on both Mac and Windows and I am happy with it. The drive works perfectly and does not require you to install anything. You just plug it in and it asks for your password. The only issue is with Mac OS 10.8.2. When I got a new Mac it could not unlock the drive. I dug around on the support website and eventually made it to the new imation support section and found how to open a help ticket. A few hours later a tech sent me the link to the software that updates the firmware. Unfortunately, you must have access to a windows box to update the firmware. With that in place the drive is perfect.
I bought this for use at work where encrypted thumbdrives are required. The set-up for the encryption and password was easy. The cap fits on very snugly, so it won't fall off and get lost. One caution. As a security feature, you have eight tries (I think) to type in the password. On the ninth consecutive incorrect password attempt, the device will permanently disable itself and be forever unusable. This is their way of safeguarding your data against someone attempting to find the password by brute force if the drive is ever lost.