Fingerprint sensors might soon be as common as the GPS in your smartphone or maybe even more common than NFC. You can tell by how many new models are coming out with the sensor these days. And it's not just the high end either. ZTE revealed something surprising when it announced the new Blade A1 in China. What is, for all intents and purposes, a low to mid tier smartphone is made special by having a fingerprint scanner, making it the first budget smarrtphone to have that feature.