If you haven't got a smart phone, you can use a program for your PC. A list of programs can be found here. I used MOS Authenticator on Windows 7 and had no problems.
If anyone has an investment worth more than $1000 I urge them to purchase a cheap used smartphone (costs like $50 on ebay) and wipe it before installing authenticator. Using a PC-based program is barely better than going without 2FA because if your password is stolen using a keylogger or trojan then your 2FA is also at risk. The whole point of 2FA is to have another device because then if your computer is compromised it's highly unlikely they also got your phone. doesn't the code refresh every 60 seconds?
Yea it does. It shocks me someone can be interested in BTC and have BTC denominated assets and not own a smartphone.
Cough Bloody cellphone Contracts with terms of 3 years mumble XD
