# Does Ignition Perspective have the ability to know which device port user inputs are coming from?

**URL:** <https://forum.inductiveautomation.com/t/does-ignition-perspective-have-the-ability-to-know-which-device-port-user-inputs-are-coming-from/70448>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [February 28, 2023, 11:26pm UTC](https://forum.inductiveautomation.com/t/does-ignition-perspective-have-the-ability-to-know-which-device-port-user-inputs-are-coming-from/70448 "2023-02-28T23:26:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jlee](https://avatars.discourse-cdn.com/v4/letter/j/898d66/32.png) [@jlee](https://forum.inductiveautomation.com/u/jlee)\
**Post date:** [February 28, 2023, 11:26pm UTC](https://forum.inductiveautomation.com/t/does-ignition-perspective-have-the-ability-to-know-which-device-port-user-inputs-are-coming-from/70448/1 "2023-02-28T23:26:49Z")

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Just like the title, does Ignition Perspective have the ability to know which device port (COM or USB) user inputs (like badge scan) are coming from?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 28, 2023, 11:59pm UTC](https://forum.inductiveautomation.com/t/does-ignition-perspective-have-the-ability-to-know-which-device-port-user-inputs-are-coming-from/70448/2 "2023-02-28T23:59:53Z")

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No.

Theoretically but not currently possible in Perspective Mobile or Workstation. I don't recall the details, but there is some effort to standardize COM port access in Web apps. (Don't hold your breath.)