A vasoocclusive coil is reinforced with a stretch resistant member to improve safety during retraction of the coil. Thereafter, the set of computer code is executed. The method also includes electronically transmitting a first statement descriptor, as part of at least one of the electronic debit transaction and the electronic credit transaction, that includes a first verification code. Layers including the antiferromagnetic layer, a free magnetic layer, and layers therebetween, have planes preferentially oriented. At each dialog turn and are known and and are hidden.