Ann: Half Year Results Investor Presentation, page-10

It is my understanding the shelf does not report a single weight from a single sensor to work out what is removed.

Sensors are placed at a variety of positions (corners at least) at key shelf mounting points and the software uses reported values from each sensor to work out what item has been taken/replaced......this tech also means it can report on any item being placed anywhere on any shelf with high accuracy.

In real terms (using made up figures) - if a 300g item is removed from the front right of a shelf the sensor at the front right may report a weight reduction of 150g, back right sensor reduced by 75g, front left reduced by 50g and back left by 25g (total 300g). Alternatively if a 300g from the exact centre of the shelf then all sensors would report a 75g reduction. Basically the amount of reduction at each sensor allows the system to map where an item is removed from.

How does it report misplaced return to shelf items.....system always knows 'what's in the basket' because it records everything picked up. If something is placed in the wrong spot and it doesn't correlate to what should be there then the system would interrogate the basket to see what item profile would suit the item.

Make sense?