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2HAC Studio
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Overview
Best QR Code Attendance for classroom, employee, contact, tracing, attendance at public activities
Best QR Code attendance for google classroom and all online learning platforms, and must-have employee tracker
You can design QR Codes for your mobile scanner. When a google form attendance design is complete, the add on will creates a Google Form. 
Student, Employee, contact or anyone must submit attendance data and data will be updated to Google Sheet file.
Step by step how to check in the classroom:
 + Create sheet tracker template
 + Share attendance file via google classroom assignment
 + For each session, teacher generates multiple QR for all students. All of them are inserted in the "QR image" column in sheet file
 + Each student checks in via using their mobile devices to scan QRCode.
 + Teacher can see the report via sheet file instantly.
Step by step how to use this add on as employee, visitor attendance (https://www.youtube.com/watch?v=auxY4qIAVGg)
Features:
 + Best add on for company for check in, out all employees, visitors, attendance at public activities. Each employee use an unique QR 
 + Generate ten thousands QR and more with very high performance. You should refresh the Sheet file after generating QR images
 + You can use this add-on as a contact, tracing application. For example, an employee of a company or a person attends an event, they will scan QR Code and enter information such as body temperature, name, phone, etc (https://www.youtube.com/watch?v=4tKgMeL5TFE&feature=youtu.be)
 + Attendance tracker: teacher can provide each QR for each student and track them via Google Sheet
 + You can insert current time when checkin or checkout using formula {{ NOW }} and action SET. If you want to see the readable date time format like this 6/19/2020 18:44:00, please use the formula {{ NOW : F1 }}. Addon uses the spreadsheet timezone, so if you want to change timezone, please change the spreadsheet timezone
 + You can require user to enter value in form using formula {{ INPUT }} and {{ INPUT_REQUIRED }} and action SET. If you want to set a required field, please use {{ INPUT_REQUIRED }} formula
 + Teacher can prevent cheating by turning on the option that says ”Allow only one response per user" in Google Form
 + Students & parents can scan QR without gmail account. If teacher turn on ”Allow only one response per user", they need to sign in using Gmail account
 + Teacher can view data by viewing google form's responses
 + Supports all of G Suite plans and educational, personal Gmail account.
 + Seamlessly embeds into your Google account
 + Scanned items instantly sync with your Google Sheet in real-time
 + Customize QRCode attributes such as content, fill color, background color, label, label position, label font, image, ...
 + Generate QR images into google sheet and print them online
 + Resize QR on the fly without changing their high quality images
 + Insert logo, image into branded QR Code
 + Support multiple languages 
 + Support all paper size including A3, A4, A5, etc
We use some scopes, you can see why we use these scopes at this link https://www.2hac.com/qrcodeattendance-privacy-policy/index.html
App script triggers are used to update spreadsheet. Since Google limits number of triggers per add-on one account could use, only 10 triggers can be used simultaneously. When the 11th bundle of QRCodes are generated, it will use the 1st trigger - therefore makes the 1st bundle of QRs obsoleted. Similarly, the 12th bundle of QRs will make the 2nd bundle of QRs unusable. We highly recommend that you should generate all QR Codes again when there is new employee or student.
For scanning QR, we highly recommend using the Iphone Camera app if you have been using Iphone or Ipad. For Android phone, we recommend using this app https://play.google.com/store/apps/details?id=app.qrcode
Troubleshooting:
+ If you see this warning "ScriptError: Authorization is required to perform that action", please follow this link https://www.2hac.com/faq/authorization-is-required-to-perform-that-action/ to fix this issue
+ If you only see help menu after installing, please refresh the Form file and you will see the add on's menu
Resources and Tutorials
------------------------------------
➩ YouTube video tutorial: https://www.youtube.com/watch?v=pTdu51HzwpM&list=PLk31adfFOxDE5iMUICKt3EIALCMF_8t7X
➩ Help: https://www.2hac.com/help/index.html
➩ Email Support: 2hacstudio@gmail.com
Reviews
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A User of QR Code Attendance for Classroom & Employee
August 11, 2020
Hi , I am having trouble in scanning the qr code , it wont direct me to the form . Please help :(
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A User of QR Code Attendance for Classroom & Employee
July 27, 2020
May I know why mine came out as scripterror: Authorization is required to perform that action. What does this mean? And also i cannot generate the qr code. Im using Windows 10 pro. hope you can help. Thank you in advance.
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A User of QR Code Attendance for Classroom & Employee
July 23, 2020
Is there a way to only have the identifier and the description show up and then click submit? We want to use this for a dismissal procedure for my campus but it'd be easier to just scan the QR code, click submit, and move on to the next one.
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A user of QR Code Attendance for Classroom & Employee
July 24, 2020
Please use the formula {{ NOW }} , students will only need to scan qr code and move on the the next one.
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A User of QR Code Attendance for Classroom & Employee
July 20, 2020
We have this add-on for our school. So far it is great.
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A User of QR Code Attendance for Classroom & Employee
July 20, 2020
Too many permission for just generating a QR code. Looks like spy-ware to me.
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A user of QR Code Attendance for Classroom & Employee
July 20, 2020
On the contrary, it is a very reliable add-on
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A User of QR Code Attendance for Classroom & Employee
June 17, 2020
Good job, very useful and helpful
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A user of QR Code Attendance for Classroom & Employee
July 7, 2020
no install , pls help me
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A User of QR Code Attendance for Classroom & Employee
June 9, 2020
It works well for covid19 contact tracing attendance. good job 2hac studio
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A User of QR Code Attendance for Classroom & Employee
June 3, 2020
Very useful and helpful
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A User of QR Code Attendance for Classroom & Employee
April 14, 2020
Useful
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A User of QR Code Attendance for Classroom & Employee
April 10, 2020
Must have addon for teachers. It saves my life.
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