Change the Signup to send out an SMS with a code
At the moment the signup process requires a mobile phone. You send a code. This means you need to enter the number and code into your mobile phone. I've done this to keep a lid on costs, but I realise this is not the best user experience.
It would be easier if we asked for your mobile number and SMSed you a code which you then entered into the web page.
If you think the signup process is too hard as it is - vote for this feature.
This is possible with the current API – I need to test and document it.