# Barcode scanner buffer

**URL:** <https://forum.inductiveautomation.com/t/barcode-scanner-buffer/70043>\
**Category:** Ignition\
**Tags:** ignition81, perspective\
**Created:** [February 18, 2023, 9:14pm UTC](https://forum.inductiveautomation.com/t/barcode-scanner-buffer/70043 "2023-02-18T21:14:12Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jorge.galvez](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jorge.galvez](https://forum.inductiveautomation.com/u/jorge.galvez)\
**Post date:** [February 18, 2023, 9:14pm UTC](https://forum.inductiveautomation.com/t/barcode-scanner-buffer/70043/1 "2023-02-18T21:14:12Z")

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Hello! I want to develop a Perspective application which have to read barcodes and store both scanned values and timestamp to a database. The scan will take place inside a bus and during its route, there are zones with no mobile service. I have tested the application with my phone and did 5-7 scans with no service (airplane mode) but only the 2 last scans are always forwarded to the gateway. Is any possibility to have a larger buffer? I'm using the perspective mobile application on an Android system to launch the project.  
Thanks in advance for your advices!

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**Author:** ![andrews](https://avatars.discourse-cdn.com/v4/letter/a/898d66/32.png) [@andrews](https://forum.inductiveautomation.com/u/andrews)\
**Post date:** [February 19, 2023, 3:22am UTC](https://forum.inductiveautomation.com/t/barcode-scanner-buffer/70043/2 "2023-02-19T03:22:17Z")

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See if this helps

[https://docs.inductiveautomation.com/display/DOC81/Store+and+Forward](https://docs.inductiveautomation.com/display/DOC81/Store+and+Forward)

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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 19, 2023, 12:55pm UTC](https://forum.inductiveautomation.com/t/barcode-scanner-buffer/70043/3 "2023-02-19T12:55:19Z")

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Unrelated. The S&F system deals with breakage between the Gateway and the database. The OP is dealing with breakage between the mobile app and the gateway.

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**Author:** ![jorge.galvez](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jorge.galvez](https://forum.inductiveautomation.com/u/jorge.galvez)\
**Post date:** [February 19, 2023, 1:14pm UTC](https://forum.inductiveautomation.com/t/barcode-scanner-buffer/70043/4 "2023-02-19T13:14:09Z")

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You are right Phil. It seems there is a buffer which stores only the 2 most recent scans. Hopefuly, there could be a way to increment this quantity.