Existing receptors on a human:Nose, tongue, skin, ears, eyes and vag.
(
Yo 'Ho of Charlie mass-market saucetrepreneur,
Sun 29 Apr 2012, 22:03,
archived)
Tongue and skin wouldn't work, as you'd have to touch first, and your zombies would just chase each other around in circles.It would have to be smell, or sight.
(
Mu Dinofiddler,
Sun 29 Apr 2012, 22:06,
archived)
How about modified cones to see infrared?A zombie has to be a different temperature from normal humans (either hot from infection or cold from being dead)
( Yo 'Ho of Charlie mass-market saucetrepreneur,
Sun 29 Apr 2012, 22:10,
archived)