Abstract: A data entry device includes a housing comprising a front and rear surface and laterally separated grip portions each configured to engage with a hand of a user. The user may thereby support the housing by engaging the grip portions of the housing. The rear surface includes first and second generally concave portions disposed proximate the first and second grip portions, which curve generally towards the hand of the user when the housing is supported by the user. The device further includes input keys positioned on each of the first and second generally concave portions of the rear surface such that the user may actuate the input keys with fingers of each hand while engaging the grip portions, and such that the generally concave portions facilitate ergonomic access to the input keys.