Abstract: The present invention provides an electronic device and computer program product, and the computer program product includes an application that is loaded into the electronic device to perform the method as follows. After a user logs into his account, the selected mobile advertisement is accepted and then played; when the mobile advertisement is selected or played, it offers a record of promotion information to be stored in the user account, the promotion information includes at least one of the following: points, a voucher, and a discount coupon, in which the point is utilized to redeem goods. At least one photo of the user account is selected, so that the portable printer can print this photo through a wireless transmission unit of the electronic device.

Abstract: The present invention provides an electronic device and computer program product, and the computer program product includes an application that is loaded into the electronic device to perform the method as follows. After a user logs into his account, the selected mobile advertisement is accepted and then played; when the mobile advertisement is selected or played, it offers a record of promotion information to be stored in the user account, the promotion information includes at least one of the following: points, a voucher, and a discount coupon, in which the point is utilized to redeem goods. At least one photo of the user account is selected, so that the portable printer can print this photo through a wireless transmission unit of the electronic device.

Abstract: A method for classifying electronically posted documents includes receiving two posted documents and generating corresponding metadata summaries for each, wherein each of the metadata summaries includes at least one sub-tree structure. The structures of the two summary sub-trees within the respective metadata summaries are subsequently compared. If the two summary sub-trees are different, the two documents are deemed distinct. If the two summary sub-trees are the same, attribute values and text content of the metadata summaries are compared over a portion of the metadata summaries. If the compared attribute values and text content are determined to be the same, the documents are deemed duplicative.