Their app, HipBar, allows liquor connoisseurs to buy full bottles of their favourite booze and later redeem it in any restaurant or hotel across the country

https://www.google.com.au/amp/s/yourstory.com/2017/03/hipbar-startup/amp/

Their app, HipBar, allows liquor connoisseurs to buy full bottles of their favourite booze and later redeem it in any restaurant or hotel across the country. For example, if the connoisseur buys a bottle of expensive whisky for Rs 5,000, he can consume even a small portion of, say, 30 ml in any bar. The hotel or bar will then charge the connoisseur for the portion, which will be paid through the app. The app will immediately reflect a reduction in the volume of the bottle. The bottle of whisky that was purchased will stand as a prepaid instrument and its value will diminish as the customer opts to consume the whisky later on."