If the product you are designing relies upon custom hardware (as with a cell phone or medical device), it is important for interaction designers and industrial designers to agree upon a general physical form and input methods.

• 如果你正在设计的产品需要定制加工的硬件（比如手机或者医用设备），则交互设计者和工业设计者要在物理外形和输入方法上达成一致，这一点很重要。