A toll-free phone number for your Shopify store gives you credibility and signals your customers you’re serious.

From the Schneier on Security blog

Science has a paper (and commentary) on generating 250 random terabits per second with a laser. I don’t know how cryptographically secure they are, but that can be cleaned up with something like Fortuna.

EDITED TO ADD (3/12): Here are free versions of the paper and the commentary.