To verify GMAT Course and Admissions Consultant reviews, we employ a 2-stage process.

Stage 1: Proof of purchase - this is done verifying with the course or consultant provider that the reviewer indeed has purchased the product.
Stage 2: Automated GMAT score verification. Using a score report link or mba.com login, users can verify their unique identity using this approach. We do not save login information or any personal details (we do not want the responsibility and there is no value in storing it) but we confirm the GMAT score and save in encrypted format a test-taker unique ID. This prevents people from using the same mba.com login from verifying multiple reviews. This also prevents the person from using online and offline versions of the test to confirm multiple reviews. The ID is shared for both versions of the test.