The Memory Stick from meZmory two advantages for me: the small size: It fits perfectly to a keychain and also the carbine works safely and reliably. Secondly, the protection of the USB connector. In other keychain, it is already happened to me that was totally scratched by the frequent use of the key of the connector. That can not happen with this stick, because you can fold the plug in the casing of the key fob. The deployment and retraction goes effortlessly. Still holding the stick when it is collapsed in the position (and not works itself out). The long-term test is made but at the first glance a promising tool! Toll. ;)