New method for opening doors ?

Today a maping fantasy poped up in my mind :D .

Is it possible (in hl engine) to open a door by staying in a selected place and by typing a word in chat ?
You choose a place from hammer, and while you are there, you need to write something in chat (Y) so that door can open.

That's what I have in my mind.

Is it possibile ? If yes, how ?

right not possible but the ones which is possible is the selected place ^^

yea it would also be a nice idea :)

make 2 blocks, make 240 units distance between, and make triger_multiple on the second box, so when player jumps on that block, door opens :)

just an idea