The only perfect way to get them is to put on a hat and a pair of sunglasses and cycle to the shops location and buy them with cash,lol,or use a money order and a po box no. and make sure you create the po box No. with a fake id you can also use a prepay credit card to help conceal your true id,most seed suppliers will always recommend that you dont have the seeds shipped to the grow location,to be honest there isnt really a perfect way to hide,with growing there is an element of risk all the way through you should make yourself well aware of this fact all the time and never forget it