Bitcoin Silent Payments could make reusable addresses far more private on mobile, with recent scanning data estimated at about 8 MB per day. The harder problem is trust: if a light-wallet indexer omits the data tied to an incoming payment, the wallet may never show that payment until it rescans from an honest source. https://cryptoslate.com/bitcoins-newest-mobile-privacy-feature-could-make-your-incoming-money-completely-invisible/