"The development of different bees from the same DNA in the larvae is one of the clearest examples of epigenetics in action - mechanisms that go beyond the basic DNA sequence, " said co-author Mark Dickman from the University of Sheffield.
Security goes beyond most fingerprint readers, as well: while a basic swipe-and-done scan is an option, the truly cautious can require a multi-scan sequence that fends off just about any intruder.