2. Power improvements: Android M will feature a smart power-managing feature called Doze. This feature works by letting system optimally manage the background processes. The OS keeps a tab on the motion detection sensor and if there is no activity for a long time, the system shuts down some processes. Since it is in the Doze stage, the system can still get activated by alarms and high priority notifications. According to Google, this feature has helped increase the standby-time on the Nexus 9 by almost two times over the Android 5.0 Lollipop.
3. Andrid Pay: It will let you make your payments using near-field communication (NFC) and host card emulation techniques for tap-to-pay services. You just need to unlock your phone, keep it near an NFC terminal and your payment is done, without opening any app. Google says when you add in your card details, a virtual account number is created to make your payments. Your actual card number is not shared with the store during the transaction.
4. Fingerprint support: Android M will standardise the fingerprint sensor support and it is working with various phones to make a standard API to go with their sensors. You can use your fingerprint to authorise an Android Pay transaction, unlock your device or make Play Store purchases.
5. Chrome Custom Tabs: The web browsing experience with the Chrome browser will also get a shot in the arm. Chrome Custom tabs, a new feature, will let you include webviews within a particular app, without the need to switch to the Chrome browser on your phone. The Chrome browser will run atop your app (in case you click on any link within the app). Features such as automatic sign-in, saved passwords, autofill will work on the apps seamlessly. Also the Chrome Custom tab will take up the colours and fonts of the app it is being opened within, to make it seem like a seamless experience.