How to Block Websites from Checking Saved Payment Methods in Chrome

The Financial Exploit Vector

Google Chrome features an automated convenience setting named “Allow sites to check if you have payment methods saved.” When enabled, malicious websites or aggressive online retailers can execute a background JavaScript API to silently ping your browser. The browser will instantly confirm whether or not you have active credit cards stored in your Google profile. While this allows legitimate stores to optimize their checkout pages, it provides untrusted websites with sensitive metadata regarding your financial capabilities before you ever attempt a purchase. You must completely sever this financial API.

How to Block Payment Method Verification

You can permanently paralyze the browser’s ability to answer financial queries via Chrome’s Payment Methods settings.

1. Open the Google Chrome desktop browser.
2. Click the three vertical dots (⋮) in the top right corner and select Settings.
3. In the left-hand sidebar, click on Autofill and passwords.
4. In the main window, click on Payment methods.
5. Scroll down to the bottom of the Payment methods page.
6. Locate the toggle switch labeled Allow sites to check if you have payment methods saved.
7. Toggle this switch to the Off position.

Total Financial Anonymity

The change takes effect instantly. Google Chrome will completely sever its internal connection to the PaymentRequest API’s verification function. The browser is now permanently barred from acknowledging your financial profile. If an online retailer attempts to execute a background script to see if you are a “high-value” user with stored credit cards, the API call will instantly auto-reject in the background, returning a null value. You can still manually type your credit card into a checkout page, but the browser will guarantee absolute financial anonymity during general web browsing.