Because it is easy and secure, direct carrier billing has become a top choice for mobile consumers.

ENGADGET: AT&T now offering carrier billing services on Samsung's Media Hub video purchases

Google has opened the doors to In-app purchases, carrier billing and now, in-app subscriptions.

ENGADGET: Google brings in-app subscriptions to Android Mobile

Now just give us carrier billing and we'll be all set.

ENGADGET: Android Market web store hands-on Hands-on

Balsillie named carrier billing, value-added services, some undefined new type of advertising and Near Field Communications (NFC) as features that would soon be added to both the PlayBook and BlackBerry smartphones.

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Announced via the company's developer-focused Hacks blog, navigator.mozPay() is a Javascript API crafted in the vein of Google Wallet, but with a key difference: it'll allow direct carrier billing and support for various payment providers.

ENGADGET

Of course, alternatives from RIM, Apple, and Android aren't offering carrier billing here either -- but this was a cool opportunity to get a leg up, so here's hoping they end up getting this one worked out.

ENGADGET: Nokia loses carrier billing for US Ovi Store launch Mobile

Here's the thing, though: for many, direct carrier billing could be a big part of that "seamless user experience" thing, and recognizing that, Nokia had planned to offer it from the get-go in the US (along with eight other countries) when it launches next month.

ENGADGET: Nokia loses carrier billing for US Ovi Store launch Mobile

The Media Hub will also have new billing options, including direct carrier options with T-Mobile in 2011.

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