First use of K.I.T.T.'s printout feature.
The stylised rounded typeface makes a comeback for the title and supporting credits after being absent for the previous two episodes.
KITT says the number of 6 digit combinations is "virtually unlimited", but there are "only" exactly one-million combinations, which is 10 to the power of 6, or more specifically, 000000 - 999999.
Bonnie says that topaz is her birthstone, and that her birthday is November 24th. That is also the birthday of the actress who plays Bonnie.
This episode is the first of Jack Starrett's three, unrelated appearances on Knight Rider. He can also be seen in season two's "K.I.T.T. the Cat" and season four's "Sky Knight".