The BlackBerry of the future may just unlock new doors -- literally. This week, RIM inked a new partnership with Sweden's own Assa Abloy, the company behind those NFC-enabled door locks we've seen in recent years. In a statement released Tuesday, Assa Abloy said it was working with the handset manufacturer to develop similar key card technology for the BlackBerry Bold 9900 and 9930, as well as the BlackBerry Curve 9350 and 9360. According to the company, the idea is to allow BlackBerry users to enter corporate facilities using only their handsets, thereby replacing traditional access cards, though the technology could also be incorporated into residential buildings or garage doors. This would marks the first time that Assa Abloy has implemented its NFC systems into a mobile system, though the firm pointed out that its deal with RIM isn't exclusive, suggesting that similar arrangements with other manufacturers may be in the pipeline.