Usability – and how shortcomings in device/software features and functionality are impacting the mobile space at all levels – was the focus last week. Around the world (and in Prague, where Tego Interactive is headquartered) professionals and practitioners came together at World Usability Day 2009 to exchange views and seek solutions to the fundamental usability issues that threaten to stunt market growth and stifle innovation, if we ignore the work to be done.
Editor's note: New devices, new experiences and new demands on usability change all the rules. Alfred DeRose provides a useful checklist developers can follow to deliver exceptional usability at every step in the 'app flow.'
When Amazon kicked off the month by taking the wraps off its Amazon Mobile Payments Service, or MPS (a technology that includes a set of APIs allowing mobile developers to provide payment options to their customers within mobile websites and mobile applications), it introduced more than just another way for people to pay for stuff using their phone; it set a usability benchmark that more established players, particularly mobile operators, could find hard to beat.

