My office hours are posted on the CS 458/658 course syllabus.
E-mail me at email@example.com. It's by far the easiest way to reach me!
You can send me encrypted emails using my PGP key:
DA4D 9B7D 2658 2258 CFBC CA6A 41E9 C049 09E9 FB54
My office is in the CrySP Lab (DC3332). Our phone extension is x31337 but don't expect an answer unless you notify me that you'll be calling beforehand.
David R. Cheriton School of Computer Science
University of Waterloo 200 University Avenue West
Canada N2L 3G1
My Bitcoin address is: 1JGbk9gJgo9FtfCkcjGAfm5PoAXUJWccgD