Abstract: A preferred embodiment of the disclosed can lid has a center panel having a central axis that is perpendicular to a diameter of the outer rim, or peripheral curl portion, of the can lid, an annular countersink surrounding the center panel, an arcuate chuckwall extending radially outward from the annular countersink, an arcuate step portion extending radially outward from the arcuate chuckwall, a transitional portion extending radially outward from the arcuate step portion, and a peripheral curl portion extending outwardly from the transitional portion.

Abstract: A financial transaction system that does not require the need for cash, checks or credit cards to carry out financial transactions. In return for prepayment of specified sum, a bar coded wristband is issued to a customer. On issuance of the wristband, a data base record is created that is cross-referenced with the bar code number, as well as an account number, an issue date and a present balance of the account. When the user wishes to purchase goods or services, the bar code of the wristband is scanned, and the amount of the transaction is then placed into the system. The corresponding account is debited. The wristband is constructed so as to be waterproof, and includes an adhesive strip with small tear strips for fastening around the user's wrist. An attempted removal of the wristband is effective to substantially destroy it and render it unusable to other persons.

Abstract: A preferred embodiment of the disclosed can lid has a center panel having a central axis that is perpendicular to a diameter of the outer rim, or peripheral curl portion, of the can lid, an annular countersink surrounding the center panel, an arcuate chuckwall extending radially outward from the annular countersink, an arcuate step portion extending radially outward from the arcuate chuckwall, a transitional portion extending radially outward from the arcuate step portion, and a peripheral curl portion extending outwardly from the transitional portion.