enable and disable touchscreen with lock button

[big_bum]

I own a 70D and while I like the touchscreen, when I walk around with the camera on my neck, the display gets accidentaliy touched. I was thinking that I could lock/disable the touchscreen with the phisycal lock button that locks the buttons on my 70D.
Is this possible?

I know that I can press info to turn off the display but this isn't always an easy option.