Bar code scanner prototype

Prototype of an App, which scans barcode, finds code from (previous loaded) list and adds information to list shown to user. No special design needed, basic components.

* single screen (see idea design - suggest change if easier&faster for implementation)
* scan code
* find code from stored list
* take code related data (name, price)
* add data to list of scanned codes - visible on screen
* on screen show sum of prices

Prototype / mvp
Preferrably flutter/iOS

!!! Low budget draft !!!