Multi Factor Authentication

December 11, 2013
CoinJar
AuthorCoinJar
Multi Factor Authentication

At CoinJar customer account protection is our top priority. To enhance customer account protection, we provide Multi-Factor Authentication (MFA). When enabled, MFA requires that you authorise payments on at least one other device (such as your mobile phone) before a transaction can be processed. The following article describes MFA, and we have an associated knowledge base article to assist you in getting it all setup

What is Multi Factor Authentication?

Multi-factor authentication (MFA) means a website requires confirmation from more than one device before you can perform a particular action (e.g. to log in or process a transaction). Once set up correctly the system will send a code, via SMS or an authentication app (e.g. Google Authenticator), that you input into that website to authorise the transaction.

Let’s use sending bitcoin using CoinJar as an example. The first-factor authentication comes from logging in with your CoinJar username and password. The second factor is required when you go to send bitcoin or alter your account settings.

CoinJar will send a MFA code to your phone, which you will then input where requested. This tells CoinJar that the person who has requested the withdrawal also has access to your phone, thus confirming that the requester is most likely you. This helps protect your account from hackers in case they manage to gain access to your password.

This guide was previously a walkthrough of MFA activation; this information is now captured in our knowledge base. See the links below for more details.

Setting up SMS authentication

Follow the steps under the heading Setting up SMS Authentication in the knowledge base article, Keeping your CoinJar Secure with Multi Factor Authentication.

Setting up Application (TOTP) authentication

Follow the steps under the heading Setting up TOTP Authentication in the knowledge base article, Keeping your CoinJar Secure with Multi Factor Authentication.

Using MFA to send bitcoin

Follow the steps under the heading Sending Bitcoin in the knowledge base article, Sending Bitcoin.


MFA is becoming a standard across the board as hackers think of more and more complicated tricks to compromise internet based accounts. Using MFA requires at least two of your devices to be compromised so it greatly reduces the chance of your account being accessed.

If you have any questions about this article please take a look at the knowledge base and also feel free to contact our Support team.


CoinJar’s digital currency exchange services are operated by CoinJar Australia Pty Ltd ACN 648 570 807, a registered digital currency exchange provider with AUSTRAC.

CoinJar Card is a prepaid Mastercard issued by EML Payment Solutions Limited ABN 30 131 436 532 AFSL 404131 pursuant to license by Mastercard. CoinJar Australia Pty Ltd is an authorised representative of EML Payment Solutions Limited (AR No 1290193). We recommend you consider the Product Disclosure Statement and Target Market Determination before making any decision to acquire the product. Mastercard and the circles design are registered trademarks of Mastercard International Incorporated.

Google Pay is a trademark of Google LLC. Apple Pay is a trademark of Apple Inc.

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CoinJar’s digital currency exchange services are operated by CoinJar Australia Pty Ltd ACN 648 570 807, a registered digital currency exchange provider with AUSTRAC.

CoinJar Card is a prepaid Mastercard issued by EML Payment Solutions Limited ABN 30 131 436 532 AFSL 404131 pursuant to license by Mastercard. CoinJar Australia Pty Ltd is an authorised representative of EML Payment Solutions Limited (AR No 1290193). We recommend you consider the Product Disclosure Statement and Target Market Determination before making any decision to acquire the product. Mastercard and the circles design are registered trademarks of Mastercard International Incorporated.

Google Pay is a trademark of Google LLC. Apple Pay is a trademark of Apple Inc.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

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