Sáez-Trigueros, D. (Inventor), Hertlein, H. (Inventor), Ariyaeeinia, A. (Inventor), Meng, L. (Inventor), Alitto, M. (Inventor) & Hartnett, M. (Inventor), 9 Aug 2017, IPC No. G06K 9/00 (2006.01), European Patent Office , Patent No. EP 3 203 416 A1, Priority date 5 May 2017, Priority No. GB 201602129