
Personalization for anonymous visitors: recognizing returning visitors without a login
How to personalize for returning visitors who are not logged in, by recognizing their device with a durable identifier that holds without cookies.
Vladislav Puhalsky is a Product Manager at ShieldLabs with 10 years of experience in product development and launching digital products.

How to personalize for returning visitors who are not logged in, by recognizing their device with a durable identifier that holds without cookies.

What a good new vs returning visitor ratio is, why the cookie-based count in analytics is wrong, and how returning visitors are recognized without cookies.

How to detect seat sharing in a SaaS product: spotting one paid seat used by a whole team, the per-seat revenue it leaks, and how to convert sharers.

What online travel fraud is, the main types from stolen-card bookings to miles theft and fake listings, and how the device behind a booking ties them together.

How to prevent coupon abuse: what separates it from coupon fraud and everyday couponing, and how merchants catch one shopper using many accounts.

How to prevent bonus, promo, and coupon abuse: the mechanic behind it, the signals that flag an abused offer, and how to score a claim before you credit it.

How to identify anonymous traffic and recognize returning visitors hidden behind VPNs, proxies, Tor, Private Relay, and anti-detect browsers.

How to prevent multi-accounting: detect one person operating many accounts, why IP-based detection fails, and where detection ends and your decision begins.

How account sharing detection works: counting the distinct devices behind one login, the signals that reveal it, and how to act without false positives.