Throughout the series it is implied that vampires cannot enter a house without being explicitly invited in. The question is how explicit should the invitation be?
In one of the episodes Elena goes to meet Isabelle's school friend who tries to check if Elena is a vampire by not explicitly inviting her but instead saying... 'Kitchen's this way' along with a 'come in' gesture she makes by hand. Isn't the gesture a kind of invitation?
What happens if the invitation is made in following manner...
- If a mute person gestures a 'come in' to a vampire by hand without speaking
- If the vampire is far away but you call him/her by phone and invite in a few hours before he reaches your door... can he enter directly in that case?
- If you metaphorically invite the vampire... or ask a rhetorical question such as 'Do you really need to be invited inside now?'