The Microsoft Band SDK gives developers access to the sensors available on the band, as well as the ability to create and send notifications to tiles. Enhance and extend the experience of your applications to your customers' wrists.

Extend the experience of your application to your users' wrists via a new dimension of interaction. Create an app that can send UI content to the band, keeping users engaged when they're in motion. Your app can also receive data directly from the band sensors, giving your users more reasons to interact with it. Create a personalized, data-rich, custom experience and enhanced scenarios that will engage users in ways only possible with Microsoft Band.

Use a range of sensors including heart rate, UV, accelerometer, gyroscope, and skin temperature, as well as fitness data, to design cutting-edge user experiences:

• Accelerometer
  Provides X, Y, and Z acceleration in meters per second squared (m/s²) units.
• Gyroscope
  Provides X, Y, and Z angular velocity in degrees per second (°/sec) units.
• Distance
  Provides the total distance in centimeters, current speed in centimeters per second (cm/s), current pace in milliseconds per meter (ms/m), and the current pedometer mode (such as walking or running).
• Heart Rate
  Provides the number of beats per minute, also indicates if the heart rate sensor is fully locked onto the wearer’s heart rate.
• Pedometer
  Provides the total number of steps the wearer has taken.
• Skin Temperature
  Provides the current skin temperature of the wearer in degrees Celsius.
• UV
  Provides the current ultra violet radiation exposure intensity.
• Device Contact
  Provides a way to let the developer know if someone is currently wearing the device.
• Calories
  Provides the total number of calories the wearer has burned.
• Altimeter (Microsoft Band 2 only)
  Provides current elevation data like total gain/loss, steps ascended/descended, flights ascended/descended, and elevation rate.
• Ambient Light (Microsoft Band 2 only)
  Provides the current light intensity (illuminance) in lux (Lumes/m²).
• Barometer (Microsoft Band 2 only)
  Provides the current raw air pressure in hPa (hectopascals) and raw temperature in degrees Celsius.
• Galvanic Skin Response (GSR) (Microsoft Band 2 only)
  Provides the current skin resistance of the wearer in kohms.
• RR Interval (Microsoft Band 2 only)
  Provides the interval in seconds between the last two continuous heart beats.

Keep users engaged and extend your app experience to Microsoft Band. Create tiles for the band that send glance-able data and notifications from your app to your users.

Each app tile is visually represented on the Start Strip by an icon, and when a new notification arrives, the icon is scaled down and a number badge appears on the tile. App notifications come in two flavors:

• Dialogs
  Dialog notifications are popups meant to quickly display information to the user. Once the user dismisses the dialog, the information contained therein does not persist on the Band.
• Messages
  Message notifications are sent and stored in a specific tile, and a tile can keep up to 8 messages at a time. Messages may display a dialog as well. Both notifications types contain a title text and a body text.

Custom tiles have application defined layouts and custom content, which includes multiple icons, buttons, text blocks, and barcodes. With custom tiles, developers can define unique experiences for their applications. The developers control exactly how many pages to show inside of a tile as well as the content of individual pages.

They can update the contents of a page that has been created using custom layout at any point, unlike messaging tiles where every new message results in the creation of a new page inside the tile. In addition, a developer can choose to add additional pages inside the tile. If the total number of pages goes past the maximum pages allowed inside the tile, the right most page is dropped out when a new page is added.

It is also possible to register for tile events. This allows a developer to know when the user has entered and exited their tile. In addition, they can receive events when a user taps on a button in one of their custom tiles.

Monetize your app by offering users ways to customize the band. Change the color theme, or bring the Me Tile to life by changing the wallpaper.