Completely OT: Mobil electronics hacks

I am posting this here due to the level of tech creativity I have
found here not because this is related to FreeBSD (in any direct way).
  I have two problems and want suggestions on how to solve them:

1. My new android (not new but recently upgraded) likes to turn itself
on while in my backpack and since the carrier has started streaming
ads even in "screen saver" mode this drains my battery fast (I went to
sleep with 95% and woke up with a dead/drained phone).

2. The MTA (aka MYC subway) has started using tap and go far payment
(OMNY Card) that looks onto the NFC "device" it can find and not
necessarily your OMNY Card for example it looked onto a credit card I
had never used in connection to the MTA and took my fare from that not
my OMNY card several times now.   I have partially solved this by
putting a mini faraday cage (tin foil in paper towel) in my wallet
between the out side and the cards but still happens once in a while.

-- 
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org