Batman factor

( n.)

   1.  An integer number representing the number of items hanging from a
   {batbelt}.  In  most  settings, a Batman factor of more than 3 is not
   acceptable  without  odd  stares  and whispering. This encourages the
   hacker in question to choose items for the batbelt carefully to avoid
   awkward social situations, usually amongst non-hackers.

   2.  A somewhat more vaguely defined index of contribution to sense 1.
   Devices  that  are  especially  obtrusive, such as large, older model
   cell  phones, "Pocket" PC devices and walkie talkies are said to have
   a  high  batman factor. Sleeker devices such as a later-model Palm or
   StarTac  phone  are  prized  for their low batman factor and lessened
   obtrusiveness and weight.

[glossary]