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A Ghost telemetry link that speeds the development of your upgradeable Auto Rifles. Lasts 30 minutes.
― In-game description

Auto Rifle Telemetry is a consumable that increases the experience gained towards auto rifles for 30 minutes.

Prior to Destiny: The Taken King, they could be purchased from Xûr or from dismantling upgraded legendary auto rifles. After The Taken King, they were replaced by Primary Telemetry.