Eye Contact Only

This was a -20% limitation with a maximum range of 3 yards in GURPS Psionics, page 28
Also found on page 133 of Hellboy RPG where it was limited t oTelepathy and Psychic Vampirism and teir single skill powers
It doesn't appear to exist anymore in 4e. Sense-Based as Sight-Based requires enemies to see you, while Sense-Based (Reversed) requires you to be able to see an enemy. In combination, the sum of -20 and -20 is -40 for both, and that doesn't have a 3 yard limitation which would be worth even more.
The range presumably has to do with the range at which you could reliably make out each other's eyes, so could perhaps be considered flexible for those with better vision.
PP6 talks about using this requirement in combination with other factors. to get a bonus for abilities which normally lack it. This is the tertiary bonus called blatant contact though it is more extreme than mere eye contact.
*if the target is inanimate, restrained, or willing, 
*allowing you to make contact in a blatant, direct manner
*(e.g., placing both hands on his temples and staring into his eyes for Telesend,
*or exposing a motherboard and cradling it in your hands for Surge),
*add an additional +1; this always takes at least 1d seconds.
Category:Limitations