nice dude.. i guess accelerometers aren't used much by hobbyists in india.... i found something that might be useful to you..... #-Link-Snipped-# I personally haven't worked with accelerometers...but it looks...

awesome ideas.....googled and found some more.. #-Link-Snipped-# #-Link-Snipped-#

you can check this out..its something similar..called MyLocation by Google... here's the link : #-Link-Snipped-# Also, this person has tweaked MyLocation further to provide a more accurate position estimation based...

if you require more speed, i would suggest you go for dc motors. they have high rpm levels and dont require complex circuitry to run them......

You can check out this..its called Photoplethysmography,......... <a href="https://en.wikipedia.org/wiki/Photoplethysmograph" target="_blank" rel="nofollow noopener noreferrer">Photoplethysmograph</a> And i guess a little bit of work through google could lead you to this... #-Link-Snipped-#

have u thought about steganography..?? <a href="https://en.wikipedia.org/wiki/Steganography" target="_blank" rel="nofollow noopener noreferrer">Steganography</a>