Green’s Dictionary of Slang

(US) a comb. form used to indicate technological expertise or involvement, esp. as regards computing, e.g. technofreak.

2000		Guardian G2 12 Jan. 4: This meant a very tech-savvy, net-focused and closed world.
2000		Indep. Rev. 8 May 1: A specky techno-geezer of 47 with a wispy beard.
2002		J. Franzen Corrections 269: What gave him a real techno boner, however, was a radio-controlled toy automobile.
2010		J, Lanier You Are Not a Gadget 27: Ideas that were once tucked away in the obscure world of artificial intelligence labs have gone mainstream in tech culture.