Load the products in the offline POS-cache in an incremental manner (frame by frame).
The full autonomy can be acheived in some minutes depending of the loading setting (see at the bottom).

Use the online mode as much as possible to be best accurate, and use the offline mode only when the connection is lost or the server is busy.

Automatically add a new product to the offline POS-cache (when it is requested) even after the POSBOX has loaded all its products list.
For example, if the POSBOX doesn't find a scanned barcode locally (because the product is new) then it will search it on the server.
This is true also when the cashier search a new product by typing its reference, name or barecode.

Update an existing product in the offline POS-cache every time a fresh copy is received from the server.
This will make the POSBOX use the most up-to-date product info received from the server at next possible connection lost.

Visually display the POS-cache filling progression ratio in the Point of Sale web interface (the ratio is appended to the username widget).

Add three new properties to the POS configuration :

• Products Cache Initial-Size : represent how many products to load immediately in the POS cache when it is just opened (default=1000);
• Products Cache Loop-Frame-Size : represent how many products to add to the POS cache on each step of the background loop (default=200);
• Products Cache Loop-Frame-Delay : represent number of milliseconds to wait before each step of the background loop (default=1000);

Add three new properties to the javascript class models.PosModel :

• products_at_server_side_count : represent the number of products at server side;
• products_in_cache_count : represent the number of products in the offline POS-cache;
• products_in_cache_ratio : represent the products offline POS-cache filling ratio;