You can enter your amazon verification code from any device by using amazon.com/code, the official verification and activation page provided by Amazon to link your TV or streaming device to your Amazon account.
Follow these steps to enter the Amazon verification code from any device:
Turn on your Fire TV, Fire Stick, or Smart TV and open the Amazon Prime Video or Amazon app.
Select Sign In or Register on the Amazon website.
A 6-character verification code will appear on your TV screen.
On any device (mobile phone, tablet, laptop, or desktop), open a web browser.
Go to www.amazon.com/code.
Sign in to your Amazon account.
Enter the verification code shown on your TV and click Submit.
After you enter the code at amazon.com/code, your TV or device will automatically verify and connect to your Amazon account within seconds.