British supermarket chain Sainsbury’s is expanding its mobile commerce strategy with a new version of its online site for groceries that lets users shop and buy via a mobile device.

Intuit is extending its mobile commerce strategy with a new deal to acquire shopping application AisleBuyer.

Financial institution J.P. Morgan is expanding its mobile portfolio with a mobile application that lets its depositary receipt clients manage their investments.

Square, which is known for its mobile payments solution for merchants, is making a bigger push into the consumer side of the transaction with a major revamp of its application that lets shoppers complete transactions via their smartphones.

Citi and MasterCard are encouraging consumers to make the mobile device their new wallet through an advertising campaign that educates them about Google Wallet.

PayPal introduced new services for both consumers and merchants this week as it continues to focus on building a digital payments business with mobile as a key component.

Walmart, Target and other retailers are reportedly collaborating on their own mobile payments system that would compete with Google Wallet and Isis.

There has been a flurry of news related to mobile payments of late but two very important stakeholders have been mostly absent from the announcement: retailers and handset manufacturers.

The mobile industry let out a big “oops” this week when flaws were exposed in mobile applications from Google and Citi that put consumers at risk, suggesting that the rush to be first in mobile payments and mobile banking may come with a price.

Two Google employees closely associated with its Google Wallet initiative have recently either left the company or moved on to other projects in a possible reflection of the challenges that Google is facing in the mobile payments space.