Which is essentially like having a device finger print that's authenticated by VZW's towers. It's essentially their unique key to map data too, removing much the anonymity. Additionally Verizon knows which accounts have what IMEI's activated at any given time.
Unfortunately no, when I used to do BREW dev, we had a few lines setup for many many handsets, everytime we needed to swap active lines between devices it meant calling up Verizon and giving them new IMEI.
Now I don't know exactly how this all works with LTE and the sim cards, since I no longer work on mobile apps I haven't really bothered keeping a close eye on it.
Which is essentially like having a device finger print that's authenticated by VZW's towers. It's essentially their unique key to map data too, removing much the anonymity. Additionally Verizon knows which accounts have what IMEI's activated at any given time.