Actually, it's even easier than that. They don't even check that you use the card. I bought a $5 Starbucks card at least 18 months ago, and have used it since

Actually, it's even easier than that. They don't even check that you use the card. I bought a $5 Starbucks card at least 18 months ago, and have used it since for free wi-fi at Starbucks despite having never used or refilled it since.