Yes, the TomTom update service does update according, at least, to the model of device plugged into the computer. Since older systems required an email address and credit card to purchase quarterly updates, and (I assume) the system was checking to make sure it was your device serial number plugged in, your email address and all registration info are attached to your TomTom device. With any luck, my refurb was once registered under the original owner; then maybe they don't know who they're watching!

Looks like TomTom gets to catch me speeding; my GPS will be moving over 100 miles per hour, straight down as I throw it off the nearest bridge. And here I had some respect for them.