In Sweden we added legislation to allow the Swedish FCC to evaluate and approve digital signature systems (by evaluating the security level of the technical system and the of the certificate authority). The law doesn't mandate any specific technical system. Approved systems are legally just as valid as a pen-and-paper signature.
It's worked extremely well. There are a couple competing systems. Some use smartchip ID cards, some use smartphone two factor auth, and others use a certificate file on the computer. The most popular system is run by a consortium of banks and uses a certificate file, and supports Windows, Mac and Ubuntu Linux through a browser plugin. Most government services like filing taxes, address change, student loans, etc support 3-4 different systems.
It's worked extremely well. There are a couple competing systems. Some use smartchip ID cards, some use smartphone two factor auth, and others use a certificate file on the computer. The most popular system is run by a consortium of banks and uses a certificate file, and supports Windows, Mac and Ubuntu Linux through a browser plugin. Most government services like filing taxes, address change, student loans, etc support 3-4 different systems.