Improved secure card packaging is provided which includes a concealed region within which an activation data field corresponding with a transaction card is located. The corresponding transaction card may be retainably disposed so that a proprietary account data field thereupon is not readable when the concealed region is selectively accessed. Upon accessing the concealed region, the activation data field may be read to activate the transaction card, e.g. at a point-of-sale location. Locating the activation data field within a concealed region reduces tampering risks. Tampering is further reduced by retained disposition of the transaction card so that the proprietary account data field is not readable prior to a purchase and card activation transaction.