The document discusses the MobiLife project, which aims to develop new mobile applications and services with context-awareness and multi-modal interfaces. It focuses on developing applications that are self-aware of the user's local environment and automatic device configuration, group-aware of context and presence, and world-aware to support seamless access across domains. Examples provided include applications that track a user's context, plan family activities using location awareness, monitor health with a heart sensor, and schedule group activities. Business models for these applications may include subsidies, advertising, premium services, or new roles for context and trust providers. Open issues discussed include addressing privacy across physical, decisional and proprietary contexts and managing identity and anonymity with data protection laws