Blogger Albert Alberts loves a slim wallet, and after reading over some of our wallet-slimming tips, he realised he had a powerful wallet-slimming tool in his pocket all the time: his iPhone. His idea? Rather than reducing his membership cards to just one club card, he scanned his membership cards to his computer, then synced them to his iPhone as an album called WalletCards. According to the post, his phone-friendly cards even scan successfully. You're still going to be at the mercy of whether or not the workers are willing to accept your scanned cards, but if they are, you can carry around all the membership cards you want without adding any bulk to your wallet.