PLEASE NOTE: OpenTAP gateway also works without having to register your receiving mobile phone numbers. By just simply inputting the gateway access number within UK 09018600011 (for international users, please input +447640177177) and remember to follow step 5 of the above mentioned). If you wish to receive email message alerts as well as text messages, you will still have to register. Calls cost £0.35p per call plus your network provider access charge. If you are dialling from international and having trouble accessing the latter 2 access numbers, then please try +448726149997