No there's no need to worry about security. Works just like on the NS4G. My only word of advice is if you're rooted and going to be flashing ROM's make a back up of that version of Wallet before you flash. If not you'll end up like me and can have wallet installed on the phone, but doesn't let you add money to the pre-paid card.
Sent from my Galaxy Nexus using Tapatalk and SwiftKey 3 beta
