Anthony grins as both Ben and Kijani unknowingly allow him to take a sample of their DNA. After Ben touches the doorbell, a nanomachine acting as a vacuum sucks up the traces of unique oils on Ben's finger, then repeats the process after Kijani touches it as well. [i]"And now I have material to make more of them, if the need arises."[/i] Anthony thinks with pleasure before sending a mental cue to the door, opening it. "Come on in," he calls out to his two classmates.