Through the first few months of 2018, visits lasting between three and five minutes — called micro-visits — have increased 9% over year-ago levels at Whole Foods stores with lockers in the chain’s top 10 markets, according to digital marketing firm inMarket. Since Amazon completed its acquisition last August, micro-visits have increased 11% at stores with lockers, compared with 7% at stores without lockers, inMarket said in the report, which tracks customer traffic via location data.