Sig is your biographer, your personal analyst, your link to the people closest to you. Sig is also a revolutionary way to learn from ourselves – about ourselves, our friends, and our peculiar species.

Know yourself. Be yourself. Talk to Sig.

•Use Sig to track how you’re feeling and what you’re doing throughout the day. Record your energy level, mood, sleep, exercise and other activities – all with the touch of a button.

•Use Sig to analyze the patterns in your life. What (or who) makes you happy? Annoyed? Melancholy? Was being single really more fun? What times of the day – and month – are you at your best? Were you this bored last new year’s? Sig provides easy-to-read charts and graphs that help you figure out why you feel the way you feel.

•Use Sig to let your confidantes know how you’re doing – discreetly, unobtrusively, and in real time – without posting a status update that your whole world can read. Is your best friend a little blue? Is Mom still angry? What is your sweetheart feeling right now? Sig lets you know – and enables you to send private messages of support (or sass) to the people you care about.

•Use Sig to stay abreast of the latest research from the worlds of psychology and neuroscience. Is happiness a matter of nature or nurture? How can you become more focused? Should you smile when your heart is breaking? Apply the latest findings to your own life and share them with others.

•Use Sig to find out how the world is feeling. Are women happier than men? Are blue states bluer than red ones? How much sleep and exercise are other people getting? Which cities, colleges and bars are feeling good right now? Each time you talk to Sig, you help create a living portrait of human emotion that grows more illuminating every day.