Let me this put this question out to a few rank and file sales types....and indeed, the Starbucks scenario would be interesting. Wouldn't this person be a bit suspicious if the sales person kept showing up in the same places? 

I am assuming the Google Glass functionality will eventually be built into a contact lens. 

Clearly you did....and there you go again, sharing the credit-:)

Joel, You are climbing up Maslow's "hierarchy of needs." Very Zen-like....the behaviors you advocate  require some combination of confidence, competence and common sense. No room for neurosis and insecurity....

Ahhh...it's mobile device virtualization. I've written about it a couple of times.

http://www.enterprisecioforum.com/en/blogs/jdodge/mobile-device-virtualization-holds-keys