What do I need to sign up for HP Instant Ink service?
To sign up for HP Instant Ink, you need online enrollment, a valid credit or debit card, an email address, and an Internet connection to your printer. You must complete the sign-up at hpinstantink.com to activate the service. (Page 2)
From the official HP Officejet Pro 6830 E All-in-One Printer manual, page 2
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