Perhaps the signing functionality offered by HelloFax will give them enough differentiation
I think the editing capability is key. The signature feature might work for a device with a stylus but is difficult with a mouse. I opened up an image editor and wrote my signature with a mouse. The result wasn't legible (at all), and more importantly, it didn't match what I consider to be my legal signature. So users would probably need access to a scanner to upload the signature image.
Hey nhebb, Joseph here, co-founder of HelloFax. Check out the third option for signing, which is taking a picture of your signature and emailing it to sign@hellofax.com. Then, we automatically place it on top of your document. That skips the scanner :)
I think the editing capability is key. The signature feature might work for a device with a stylus but is difficult with a mouse. I opened up an image editor and wrote my signature with a mouse. The result wasn't legible (at all), and more importantly, it didn't match what I consider to be my legal signature. So users would probably need access to a scanner to upload the signature image.