User-specific Requirements

Usable with up to 95% blindness

Does not harm stakeholders senses

Should not give a constant loud alert (more than 5 mins)

The product shouldn’t interrupt daily life

Should not require effort to find the product

Should not require effort to find lost item

Should efficiently interact with the user (require max 5 steps to find item)

The product should be affordable to the target audience (<50eur material cost)

The user interface should be easy to figure out

Wish: The product can be used by other target groups as well (not visually disabled)

Functional Requirements

The product should be usable for at least 20 h straight (without charging)

The product should be chargeable or have a continuous power supply

The product should be usable (turn on) in less than 10 seconds

The product should help find the item in under two minutes

The product should sense the presence/displacement of the correct object in under 2 minutes

Should work with multiple people in the room/house

Should work with min. 5 items

Installation by user possible

Wish: Give notice when charge is low

Technical Requirements

The product may make use of sensoric features

The product should be able to withstand a fall of 3 meters minimal

Wish: The product should be splash resistant