I've been using somebody else's phone number for the past year for signups since I missed one release and my number got banned. Security have never asked me to show text. For BK at least, not sure how other stores run.
Footlockers in NYC did not allow coupons (Said a company-wide email was sent out to not allow coupons for this release), but Footaction did allow coupons. Weird
SNKRS also coming Monday >D