Revolution Growth led the item location technology developer's series B round, which included corporate venturing units Amazon Alexa Fund and Docomo Capital.

US-based item detection technology developer TrackR raised $50m in series B funding from investors including Amazon Alexa Fund and Docomo Capital, subsidiaries of e-commerce firm Amazon and telecommunications firm NTT, on Wednesday.

Investment firm Revolution Growth led the round, which also included Glenmede Trust, the owner of investment and wealth management services provider Glenmede, as well as venture capital firm Foundry Group and asset manager Bespoke Strategies.

TrackR has created a coin-size sensor it calls a ‘bravo’ which can be…