Subscription-based services, particularly in the SaaS sector, face challenges with users sharing account credentials, which can lead to revenue loss. To combat this, the blog post explores strategies for mitigating and preventing account sharing, specifically using the PubNub Data Stream Network. This platform offers robust security solutions, including WebSockets and other protocols, to ensure one connection per authenticated user. Businesses, such as streaming services and hotel chains, can benefit from these techniques to enforce device-specific access, thus preventing unauthorized use. Two primary methods are highlighted: forcing remote logout of existing sessions upon new logins and blocking access for shared accounts if another session is active. These strategies leverage identity management systems and PubNub's SDKs to maintain secure and controlled access, ultimately supporting subscription model integrity.