Throughout the previous episode and this one, no one is able to get a signal on their cell phones, nor is Shane able to receive a signal on the satellite phone, yet somehow Elena is able to send Caroline pictures of Jeremy's tattoo over the internet.
Damon tells the hunter Vaughn that he knows nothing about tattoos, and that his skin is "flawless". In fact, Ian Somerhalder's tattoo on his arm has been visible in a few episodes.