The software is asking for registration details because the licence has expired, or is close to expiring. Quickmap will enable you to access information pertaining to private individuals, as such there is a regulatory requirement. That means at any time Custom Software Limited may require you to delete the data (or any part of the data), including any data supplied by you to a third party and provide evidence satisfactory to Custom Software that the data has been so amended or deleted. For this reason, Quickmap must be re-registered once a year to enable Custom Software to obtain your contact details if necessary. There is no charge for re-registering Quickmap Explorer.