Abstract: A data delivery system is disclosed in this specification. The system implements an authentication process that verifies data recipients using anonymised geospatial references. Verifying information for each user is stored in client accounts. A server system uses the information to process data requests and generate verification tags for data deliveries. The verification tags include an irreversible encoding of a delivery reference for receipt of a data delivery. Recipient client systems implement a compatible encoding process to generate a delivery authentication tag. The encoded authentication tags are compared to corresponding verification tags to validate data deliveries based on the location of the client system.

Abstract: The present invention relates to a method and apparatus for authentication using physical location, in an embodiment as a second factor in an authentication process. The method comprises the steps of obtaining verified location data based on an actual physical location of a verifying party. The actual physical location is anonymized by an anonymising process, in order to conceal the actual physical location. This allows use of the location data whilst protecting the privacy of the verifying party.