The Globe and Mail reports in its Monday edition that U.S. consumers are angry and confused about the increasingly high-tech ways that restaurant chains and major retailers are setting prices. An Associated Press dispatch to The Globe says that digital price tags are rapidly replacing paper ones in grocery aisles. Terms such as "dynamic pricing" and "surveillance pricing" are stirring suspicions that different people are getting different prices for the same product. Americans have grown accustomed to changing prices when booking flights, hotel rooms and rides, but the prospect of everyday spending shaped by algorithms they don't understand and personal data they may not realize they're sharing has touched a nerve. Walmart chief executive officer John Furner said in a blog post last month that digital price tags save workers' time and keep prices up to date. He said the labels aren't used to raise prices based on the weather, time of day or individual shopper. But companies aren't always transparent about the customer data they collect and how it's used, which has made consumers suspicious and led to speculation. Lawmakers are taking action. Legislators in at least 30 states have considered pricing bills this year.