They are not AT&T employees, they work for an SF firm called "EMW".
They claim they are contracted by ATT, but they did not have any photo I
ID's nor did they have any Palo Alto permitted ID/paperwork.
Whatever you do, don't buy from them without calling AT&T to verify whether you can receive U-verse (I want it for faster Internet). I called ATT this morning and found that U-verse is available in my neighborhood, but barely faster than the DSL speed I have now.
The guy was also trying to sell U-verse voice to me. ATT said that the voice option is not available in our neighborhood at all.