Datacards are operator modem-cards that slot into the side of your laptop and enable you to send and receive email and access the Internet wirelessly while on the move. Datacards come in three speeds HSDPA (super fast), 3G (fast) and GPRS (quite fast) and some will also feature Wi-fi for accessing the Internet when within range of a hotspot. Like voice-plan contracts, datacard deals will require users to commit to the contract for a minimum of a year and, in addition to the laptop datacard itself, users will also get a bundle of inclusive data.