Since writing in the previous post about an end to all ringing of cellphones through the use of cheap bluetooth enabled vibrating devices in watches, belts, shoes and other wearables, I've been listening to the cacophany of rings in public meetings (even those were people are told to put their phone on vibrate.) One thing I am sure we've all experienced is hearing somebody's ring get louder and louder in a meeting as they fumble to get the phone and open it to press the silence button.

I suggest the phone have a capacitave sensor on the outside so it knows when human skin is touching it. Once you are holding the phone there is no need for it to keep ringing, and certainly not to keep increasing in volume. Then one could open it and send the call to voicemail (or, in my design, push the button that answers and plays a recording to the caller saying you are walking out of a meeting and will be able to talk shortly.)

Of course, many of these fumbles are caused by phones that vibrate first, then start playing ringtone and then increase the volume of the tone. That's not a bad design though obviously phones are often in a place where they are vibrating and that's not being noticed. For those fumbling in a bag for their phone there will still be lots of loud noise.

It would be nice if phones had cheap accelerometers in them and only got really loud when they knew they were sitting still. In particular, if a phone has been sitting still for a while, and starts vibrating/ringing, and then it suddenly notices it is picked up thanks to the accelerometer, it could reduce the ringing (and perhaps do more flashing.) This might not work too well in vehicles, unfortunately. In cars we don't care about loud rings but in trains we do.