# Node red dashboard using relays and authentication using badhe scans
**URL:** https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643
**Category:** Dashboard
**Tags:** node-red-dashboard, function-node, dashboard-2
**Created:** [25 February 2025 16:28 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643 "2025-02-25T16:28:08Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@qureshi](https://discourse.nodered.org/u/qureshi)
#### Post date: [25 February 2025 16:28 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/1 "2025-02-25T16:28:08Z")
Hey guys.
This is probably going to be a really simple question for most of you and i would appreciate the help.
So I'm trying to build a simple dashboard to automate a Vending machine.
I initially want the user to scan their badge
if its the right length of characters, only then should it show the door number listed 1-16 and they should be able to make a selection of the door/touch the button.
If its wrong i want it to display a message saying Please scan your badge again.
I don't want this text to be visible until/unless the verification process deems it wrong.
I got the verification procees down using the funtion node and switch but then after that its about nothing. I am using a relay to contrl the doors in the vending machine and i have that part settled too
Ill attach what i have so far for refference
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### Author:  [@jbudd](https://discourse.nodered.org/u/jbudd)
#### Post date: [25 February 2025 16:48 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/2 "2025-02-25T16:48:26Z")
Welcome to the forum @qureshi.
It's a bit hard to tell what your two flow pictures are supposed to be doing.
I can see you have a text input "Enter Badge#" wired up to a function node and then a button.
Can you explain what this button is for?
On the other picture you have a ui-control and 16 buttons; one for each door, and each connected to a function node. How do these buttons & functions relate to the verification flow?
Which part are you having problems with?
Do you see any error messages?
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [25 February 2025 17:05 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/3 "2025-02-25T17:05:10Z")
Is the question you are asking "How can I hide and show widgets on the dashboard"?
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### Author:  [@qureshi](https://discourse.nodered.org/u/qureshi)
#### Post date: [25 February 2025 17:14 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/4 "2025-02-25T17:14:25Z")
Yes.
I want to hide and show based on what the user inputs
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### Author:  [@qureshi](https://discourse.nodered.org/u/qureshi)
#### Post date: [25 February 2025 17:17 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/5 "2025-02-25T17:17:20Z")
The button is pretty much useless right now. It it just there for the user to click/select when they enter the badge ID.
The buttons and functions are something I want to hide until the user is verified.
Once he is, I want the buttons to show on the dashboard and the user should be able to make the selection
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [25 February 2025 21:02 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/6 "2025-02-25T21:02:47Z")
If you are just setting out on this project you might want to consider dropping the old (deprecated) node-red-dashboard and moving to the new @flowfuse/node-red-dashboard.
For the popup message you can use a Notification node, and you can use CSS to show/hide the buttons.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [27 March 2025 21:02 UTC](https://discourse.nodered.org/t/node-red-dashboard-using-relays-and-authentication-using-badhe-scans/95643/7 "2025-03-27T21:02:58Z")
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