The Wickr update has new options for finding friends. (Credit: Wickr)

Wickr (download) gained new secure sending and subsequent self-destructing powers in a big update to the encryption and security app today, perhaps not coincidentally Data Privacy Day.

There are four new features in the app. You can now send and subsequently self-destruct images and PDFs from Google Drive, Dropbox, and Box to other Wickr users, which expands the limits of the original send-and-self-destruct feature. You can also send up to three 30-second videos, up to 5 MB, per message. Audio messages, which function like voice mails, have been extended to 30 seconds long, as well.

Wickr can now connect to your friends "without collecting personal data," according to Wickr's press release on the update. Although the feature, called Wickr ID Connect, precludes remaining anonymous and hidden while using Wickr, it does allow you to expand your Wickr circle. That's important, because encrypted messages must be protected by both sender and recipient for the encryption to be effective.

There's a new auto-login feature, which also decreases a message's security in exchange for fewer steps to complete your task, such as writing a text message. The final new feature, Wickr Sync, connects your Wickr account across your iOS devices: iPhone 4 and newer, iPod Touch 4 and newer, the iPad Mini, and the full-size iPad.

The iOS app, built by security experts, debuted last summer and is notable for its ability to encrypt and then automatically delete all manner of communications. An Android version is due in public beta sometime during the first quarter of 2013, according to Wickr co-founder Nico Sell.

Updated on Tuesday, January 29, 2013, at 4:50 p.m. with Android version information.