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Truecaller has opened its TrueSDK to Android app developers via a self-service portal, the company said through a blogpost. The SDK enables developers to use the user’s Truecaller credentials for signing them up for services using their phone numbers.

This move will help Truecaller strengthen the integrity of its data, while letting developers offer a new way of logging into their apps. It will also increase Truecaller’s value for customers, from just a caller-ID service, to an ID useful for logging in. The self-service portal allows developers to verify user’s phone numbers for free.

According to Truecaller, using the service can help developers reduce costs, and improve the quality of their communities by reducing spam accounts. Using the SDK to verify the phone numbers should also remove the OTP requirement for phone verification as long as the company’s data is accurate. The SDK is already used by startups like OYO Rooms, CarDekho, Ixigo and MobiKwik. Note that Truecaller had launched the SDK with 12 partners, including Oyo, Quikr and others, in February this year.

Truecaller on devices: Truecaller has been not just been increasing the value offered to developers – it has been tying up with various manufacturers to preload the app for increasing the raw number of users using the app. It recently partnered with Huawei to preload the Truecaller app in Huawei’s flagship devices starting with the Honor 8 and had partnered with Cyanogen in May 2015 for making it the default native dialer app on Cyanogen OS. The company had also partnered with Intex to integrate Truecaller and Truedialer in its Aqua Young smartphone devices.

Note that in August this year, Truecaller claimed that its 100 million Indian users were making over 500 million calls monthly through its app.