I dont think a big industry or a size of super market is accepted crypto in mass adoption yet. I hope we will see something like this soon and will be using it for real purposes.
The only supermarket I know that's leading is Walt Mart but I don't have any news if they are going to adopt and accept bitcoin. It's going to happen and we'll see it that many supermarkets are going to accept bitcoin. Today they might not consider it as the population of bitcoin is still not that considerable for their business but once we've exploded up to 20%-50% of total world's population for sure there will be a consideration for those big leading supermarket or retailing companies.
Still since people will be paying in a physical shop more problems will probably rise e.g. fees and confirmation time, sufficient knowledge on staffs as bitcoin should be at least equally convenient as traditional payment systems so an increase of users may not be enough furthermore most governements are not in good terms with bitcoin but we'll see on the coming years as there will be changes although lets just hope it'll be good.
i have been hearing that big supermarket in my country accept bitcoin as the payment and i was thought that's true but very unfortunate through their official statement said this is not true and they even never considering bitcoin as their next payment method and currently only online shop available accepting bitcoin as the payment but besides that i didn't see any physical stores
Well there are many things to consider if a physical shop will accept it and honestly in a merchants point of view i don't think its a good idea to accept bitcoin at the moment although when it comes to online shops there'll only be minimal problems.
Yes I also heard that many countries have started bitcoin in their local markets as their local currency, like Japan, India, South Africa, Vietnam etc. this is a positive step towards the success of bitcoin and prevailing bitcoin all over the world. I think that if most of the people involved in bitcoin the price of bitcoin will also increase and the investors will make a huge profit through bitcoin in the near future.