You need a valid credit card, of course. You swipe your card and you can purchase up to two bike subscriptions at once (perfect for H and I) and a $101 hold will be placed on your card for damages and for instances where you have thievery in your heart and you want to keep the bike forever.
This is the one photo we managed to get of the two of us (at least, a photo that wasn't a selfie). We were down at a dead-end dock and we asked a father of two cute little girls to snap this. I figured, the only way he could steal my camera was to abandon his girls and jump in the water. Oh, and if you're wondering, my dress is from F21. It wasn't the smartest outfit for biking in but hey, this biking thing happened on a whim. Luckily, the dress has a huge slit up each side so I could pedal freely.