Digital wallets and e-transactions have taken some time to materialise. But surely and certainly they have. There now seems to be a myriad of options. I finally succumbed to this form of electronics transaction. In truth, I didn't have much of a motivation to do so. Most, if not all, credit cards already have this pay wave option, and most transactions below $100 don't even need to be signed anymore. I finally got round to installing Android Pay, but only because POSB/DBS has some offers to link their credit cards to Android Pay with the first five transactions offering 25% rebates till 30 Sep 2016. So why not?  Anyway, the installation and linking to my credit card was quite seamless and went without a hitch. Using it, however, was another thing altogether. Must say I'm a noob on this. Wifey told me McDonalds was offering a further $2 rebate with ......