"So far, no one has been able to block her talent." - Entry on Renesmee's gift.
Anti-shield is the ability to destroy or penetrate a mental shield.
In the Twilight saga, Renesmee Cullen is the only one to show this gift, as well as the gift of tactile thought projection which she can use to show people her thoughts and memories.
She can use this power through tactile thought projection ro penetrate a shield and place her thoughts into their minds without their defences keeping her at bay.
It is not yet known if Nessie's penetration works on only Bella's shield, or any other like that of Renata, a high-ranking member of the Volturi, and Aro's personal guard. It is however thought that she can communicate with anyone she touches without their mental defences keeping her at bay. It is also unknown if her power operates by penetrating the shield, sidestepping it or neutralizing it completely.
This power works via physical contact with a target. It is unknown whether she is able to break through physical shields like Renata's. However, its effect may more restrained due to Bella being human when she passed it to Renesmee.
OriginEdit"You keep every one out."
"And no one keeps her out?
Bella and Edward's discussion on Nessie's second gift.
Renesmee's gift of anti-shielding is described as being the opposite of her mother's power - much like how her other gift of tactile thought projection is the opposite of her father's.
The power is seemingly inherited by Charlie Swan, who has a similer mental blockage, though it is much less powerful then Bella's.