Anyone able to help me out with a product name

[Utchin]

I am trying to do some reasearch on a certain technology and cant figure out the proper name:

(i have seen this is spain in a supermarket) All the printed slips of paper for products that include the price, was replaced with a LCD Panel that was used to display the name, price and so on....

What is this kinda technlogy called and anyone else able to find anyone that offers it?

 

[SilentPanda]

Like these?

I just google searched for "digital price tags". Some other hits came up too.