If you are a wheelchair user, you will know that things always tend to slip of your lap when you start moving around, so many times has this happened with my mobile phone, especially.
I designed this with that in mind.
With your phone resting on this tray, it will most certainly not slipp off as easily as what is would normally, resting on your leg for example.
please share with firends and falimy that might also be wheelchair bound and hopefully they might also find this helpfull.
I am also thing of adding a secure slot for a battery pack at the bottom of the tray with a hole for your power cable, this will allow you to charge your phone.
Any other suggestions are more that welcome!