Startup OMsignal has developed articles of clothing capable of sensing varying levels of body activity, including possible cues to emotional state, and communicating them to mobile devices for self tracking as well as for checking in with loved ones.  From Postscapes:

The shirt and bra being released for sale by the company are machine washable and have their sensors woven in them just below the chest to best collect ribcage extension/contraction breathing data and heart rate details. Housed in a hidden pocket a small unit encloses the accelerometer, GPS unit, and memory card storage in case connectivity to your mobile device is lost.

The company is working on an application allowing you to track your historical readings and privately share your data with your loved ones. Example scenarios for its use include sending your partner a comforting text message if you notice their stress levels are rising, or using it to remotely monitor an aging parent for signs of approaching health issues.

The clothing’s GPS capability can provide details on how your body is reacting to a certain environment. You might, for example, learn your stress levels are much higher while working from a coffee shop than from the office, or learn to avoid certain travel routes on your commute home if possible.

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