Dexterity

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Overview | Understanding dex. | Dex. functions (5) | Env. context | Design guidance | Pop. stats. (2)

Dexterity functions

Introduction | Pushing | Pinch gripping | Power gripping | Two-handed tasks

Many tasks with everyday products require the use of both hands at the same time. In some cases this dexterity demand is unnecessary, and an alternative design can allow the product to be used one handed, which will typically reduce design exclusion and increase user satisfaction.

For products that can be used one-handed it is also prudent to cater for those who wish to use the product two-handed. People can suffer from temporary or permanent impairments that reduce the capability of one or both hands, in which case maximum inclusion is obtained when the product’s operation is as flexible as possible.

Plugging in the cord on a corded kettle using two hands, and attaching a cordless kettle to its stand using a single hand.

A cordless kettle reduces the dexterity ability required to use it

Holding a remote control and pressing its buttons with the thumb of the same hand, versus holding it in the left hand and pressing the buttons with the right hand.

Remote controls can usually be operated with one or two hands