Google has acquired Txvia, a payments technology firm which is active in prepaid and gift card markets, for an undisclosed sum. In a blog post, Osama Bedier, Google's VP of wallet and payments, said that Txvia has partnerships will leading brands and manages more than 100 million accounts. The acquisition is an attempt by Google to boost its wallet service which is struggling to maintain momentum. A recent report said the company is reconsidering its wallet strategy and looking at ways to drive wider interest in the service. One suggestion is revenue-sharing with leading US mobile operators Verizon Wireless and AT&T, said the report.

Warning signs have come with the departure of high-ranking executives from Google Wallet.  The latest departure is Rob von Behren, one of the project’s co-founding engineers, who has taken an undisclosed position with Square, according to NFC Times. He actually left Google in January. His departure follow the news a fortnight ago that two other senior executives, Jonathan Wall and Marc Freed-Finnegan, have left to set up their own mobile payments venture.