This tech­no­logy story over at CNN/Technology sounds very inter­est­ing.
Twins crack face recog­ni­tion puzzle

The com­puter whiz-kids — 22-year-old identical twins, Michael and Alex Bron­stein, almost impossible to tell apart — have applied a new tech­no­logy to recog­niz­ing faces in a way that may yet revo­lu­tion­ize inter­na­tional security.

“I said it to them as a joke: if you suc­ceed in build­ing a sys­tem that can dis­tin­guish between the two of you, you’ll get (a grade of) 100,” said the twins’ pro­fessor, Ron Kim­mel of the Tech­nion Insti­tute in Haifa. “They suc­ceeded and got 100. They are brilliant.”

The tech­no­logy scans and maps the human face as a three-dimensional sur­face, provid­ing a far more accur­ate ref­er­ence for identi­fy­ing a per­son than cur­rent sys­tems, most of which rely on two-dimensional images, Kim­mel said.