at-home safety devices for seniors increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices connected devices increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices increasing variety of other new Quantified Self devices connected devices increasing variety of other new Quantified Self devices a smart phone loaded with health apps for seniors increasing variety of other new Quantified Self devices connected devices increasing variety of other new Quantified Self devices control over their fitness and health monitoring