[Sherlock stares, and tentatively holds out his own hand. His brows furrowed, expecting John to say no, but he couldn't not ask.]

Can I, er, see it?

[This was all new to him--as far as he knew--and he wasn't sure if John was uncomfortable with this--he hated using the word but what else could he call it?--'superpower'.

But the scientific side of him was absolutely dying of curiosity. So many questions were whirling around in his mind. How was this possible? Cellular adaptation upon potential damage! Did it involve some kind of previously unknown cellular potential that all humans had or was it based around some kind of energy field in the way he imagined his own must be? He was still sorting through what happened to himself, the only way for his mind to be able to access computers would be through some kind of field generated by his mind, perhaps...]