Abstract: A method of using a trading system of a trading system is disclosed. Comprising storing a two or more credits belonging to a two or more among a two or more consumer users in a trading system server. Storing a mapping between the two or more credits and one or more merchant users. Facilitating a trade event of the trade event among two or more among the two or more consumer users according to a trade parameters. Assigning ownership of the two or more credits to new owners among the two or more consumer users according to the trade parameters.

Abstract: A machine readable card protector is disclosed comprising: a sleeve having a first portion, a second portion, a width, a height, and a plurality of edges (having a first side edge, a second side edge, a top edge, and a bottom edge). Said sleeve having at least one open edge capable of receiving a portion of a machine readable card; and at least one of said plurality of edges are sealed between said first portion and said second portion. Said machine readable card having a first side and a second side. Said machine readable card having one or more machine readable components. Said sleeve is capable of protecting said one or more machine readable components. Said sleeve is made of a sleeve material, wherein said one or more machine readable components are readable through said sleeve.

Abstract: A machine readable card protector is disclosed comprising: a sleeve having a first portion, a second portion, a width, a height, and a plurality of edges (having a first side edge, a second side edge, a top edge, and a bottom edge). Said sleeve having at least one open edge capable of receiving a portion of a machine readable card; and at least one of said plurality of edges are sealed between said first portion and said second portion. Said machine readable card having a first side and a second side. Said machine readable card having one or more machine readable components. Said sleeve is capable of protecting said one or more machine readable components. Said sleeve is made of a sleeve material, wherein said one or more machine readable components are readable through said sleeve.

Abstract: A system for protecting a machine readable card is disclosed. Said system comprising a cover and a machine readable card. Said cover having a first side, a second side, a cover height, a cover width, and a cover thickness. Said machine readable card comprising one or more machine readable components, a card width and a card height. Said cover is capable of attaching and covering a portion of said machine readable card. Said cover is capable of detaching from and reapplying to a portion of said machine readable card.