Add your Reason and Rack Extension licenses to this USB Ignition Key if you are using Reason on several computers, without access to internet. This product can also be purchased as a replacement item, if you have lost your previous Ignition Key. Please note that only one Ignition Key can be authorized at a time. If you are using Reason 7 /Reason Essentials 2 or higher, you can also authorize your licenses to a single computer, for offline use. This way you can use Reason without being connected to the internet, or without a USB port taken up by the key.