Duo Mono icon

Duo Mono

by Jacob Zwang · Workflow & Planning
Manifest V3 Free
View in Chrome Web Store Data as of 17 Oct 2026

Automatically log into Duo 2fa. If you have chrome sync turned on it will work anywhere you are signed into chrome.

Users
126
+20 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#77K
#65K among extensions
Version
0.1.1
updated 1 Feb 2022

Users

monthly, 3 years
364126Aug 2023Apr 2025Oct 2026
Latest, 17 Oct 2026: 126 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
001Aug 2023Apr 2025Oct 2026
Latest, 17 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Duo Mono

NOT ACCOCIATED WITH © 2022 Duo https://duo.com/ AFTER INSTALL — QUICK INSTRUCTIONS • Go to you Duo protected service as you always do. • You should see a message from Duo Mono instructing you to sign in as normal. • If you're sign in is successful, you're all done! You should be automatically logged in from now on. *If it doesn't work, try reloading the page or contact me for support.* HOW IT WORKS On your first sign in after installing the extension you will see a message telling you that you need to sign in with you usual authentication method. By signing in you are allowing Duo Mono to create a new authentication device. This device will say it is of type android device, however, it is actually just using this device to acquire a device token. Duo Mono uses this token to query Duo's server to acquire an authentication secret. This secret is saved to you google sync storage and used to generate a login token each time it signs you in. It sets your default authentication device to the android device it created. During this process you will see multiple pages be automatically filled in and then you will be redirected to you usual destination. When your session runs out and you need to authenticate using Duo again, Duo Mono will automatically generate a token and submit it for you. SECURITY CONCERNS • Your Duo integrated service is now as secure as your chrome account. If your chrome account is compromised, remove the device Duo Mono created for you immediately because it could be used to sign into your account even if the infiltrator no longer has access to your chrome account. The device will be called ext-auto-login • This project is open source. You may verify the security of the source code yourself on GitHub. https://github.com/JacobZwang/duo-mono INFO • If you need log in manually or change something, open the extension popup in the top right and flip the switch off. •This will not work with multiple Duo accounts at the same time (yet).

Growth

WindowUsersChangeRatingsRating
7 days+13+11.5%00.00
30 days+20+18.9%00.00
6 months+64+103.2%00.00
1 year+74+142.3%00.00

Version history

1 versions recorded
0.1.11 Feb 2022

Details

Category
Workflow & Planning
First seen
1 Feb 2022
Size
28 KB
Languages
en
Pricing
Free
Support
github.com
Extension ID
lncmlpcdphjpofcggicgciiakehkgjpf

Permissions and risk

Low riskimpact 1, likelihood 2
Permissions
storage

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