Terrible design. I was so dissapointed with this product. The secuirty cable is only 3 feet long and since it needs to be folded back to the starting point you only have 1.5ft to find a suitable locking point for your laptop. This is a problem in most offices.The device requires batteries which can be removed and thereby disables all the other options that make this product sound innovative. A complete waste of money and I suggest going with a standard locking cable.