Good news. One small thing: Do an electromagnetic radiation test on the unit. If it's to be stored in a shirt pocket, it will be in extremely close proximity to the heart. Make sure the EMR is not at a level to disrupt the heart rhythm of even the most vulnerable person -- or even someone with an implant. In fact, shielding would seem safe and shouldn't be prohibitively expensive.
Good luck with further progress and glad to hear field testing is about to begin.
Thanks TB.....
Already thought of that EMF worries ....needs to make sure it does not interfere with any electrical equipments(especially pacemakers)...shielding has been improvised..the casing has been improved...it doesn't look cheap anymore and it's for heavy duty usage too..hope that works till all my 20 units come back for a review( a weekly schedule has been planned )...yes, it's a full field test alright for a lot of reasons...and also to improve further based on varied users inputs....now, I will have to sit back and wait....and hopes for the best...