But we live in an age of massive hacks on corporations, stolen identities and wholesale electronic theft. I'm not sure how much I'd trust businesses to keep my vein signature safe even if the company says forgery is virtually impossible. A gym I went to once offered a choice between showing my driver's license or doing a thumbprint scan to check in. I chose to show my license, even if it took longer. Seemed less risky.
To be fair, PulseWallet appears to have some advantages. One would be hygiene because users won't need to press on anything. Another is security. The company says its device can only recognize the pattern if the blood is actively flowing within an individual's veins. Given that, I could see such a device being somewhat reassuring to consumers making big purchases.
It still begs so many questions. What if you injure yourself enough to mess up the scan? Or have a prosthetic hand? Or a disability that makes it hard to lift your arms? Plus, given how much trouble there is getting grocery store self-checkout scanners to read barcodes, I picture a lot of hand waving.