The electrode provides various developer enhancements and tools for the developer including Node.js configuration and feature management. Alex Grigoryan of Walmart Labs released a statement on Medium.com on October 3, 2016, explaining the details of the applications and the scale that they operate at Walmart. Big data analytics As the largest retailer in the U.S., Walmart collects and analyzes a large amount of consumer data. The big data sets are mined for use in predictive analytics, which allow the company to optimize operations by predicting customer's habits. Walmart's datacenter is unofficially referred to as Area 71. In April 2011, Walmart acquired Kosmix to develop software for analyzing real-time data streams. In August 2012, Walmart announced its Polaris search engine. The amount of data gathered by Walmart has raised privacy concerns. Cash handling in 2016, Walmart began a drive to automate much of the cash handling process. Walmart began replacing employees who count currency by hand with machines that count 8 bills per second and 3,000 coins a minute. The processing machines, located in the back of stores, allow cashiers to process the money for electronic depositing. Charity Sam Walton believed that the company's contribution to society was the fact that it operated efficiently, thereby lowering the cost of living for customers, and, therefore, in that sense was a "powerful force for good", despite his refusal to contribute cash to philanthropic causes. Having begun to feel that his wealth attracted people who wanted nothing more than a "handout", he explained that while he believed his family had been fortunate and wished to use his wealth to aid worthy causes like education, they could not be expected to "solve every personal problem that comes to [their] attention". He explained later in his autobiography, "We feel very strongly that Wal-Mart really is not, and should not be, in the charity business," stating "any debit has to be passed along to somebody—either shareholders or our customers." Since Sam Walton's death in 1992, however, Walmart and the Walmart Foundation dramatically increased charitable giving. For example, in 2005, Walmart donated in cash and merchandise for Hurricane Katrina relief and in 2020 they committed $25 million to organizations on the frontlines of the COVID-19 pandemic response. Today, Walmart's charitable donations approach each year. COVID-19 As of January 2021, healthcare workers could get vaccines through Walmart in New Mexico and Arkansas. Walmart planned to offer vaccines in Georgia,