Tesco (which is actually a British chain that operates in Korea rather than a Korean chain) has been leading online grocery shopping for a long time. It first offered Videotex Teleshopping in 1984 and was the first to offer internet shopping in 1996.
It's online store Tesco.com is the largest online grocery store in the world (largely driven by the fact that online grocery shopping is much more mainstream in the UK compared to most other markets)
They're trialling a lot of interesting tech at the moment (API, in-store GPS for finding products, etc.). One of their major competitors Ocado makes 10% of their income through iPhone "scan-and-shop" orders so it's definitely a huge market.
Having just placed my fortnightly shop using Ocado's excellent iPad app, I think wandering round the kitchen/bathroom to check what I still have during the process of buying new stuff is the most compelling use for the iPad I've yet found.
It's online store Tesco.com is the largest online grocery store in the world (largely driven by the fact that online grocery shopping is much more mainstream in the UK compared to most other markets)
They're trialling a lot of interesting tech at the moment (API, in-store GPS for finding products, etc.). One of their major competitors Ocado makes 10% of their income through iPhone "scan-and-shop" orders so it's definitely a huge market.