Official permission is required to enter in the state of  Arunachal Pradesh
Arunachal Pradesh Inner Line Permit
Entry Formalities
As Arunachal Pradesh falls under restricted area, official permission is required to enter the state. There are two kinds of official permits prescribed by Government for entering into any area within Arunachal Pradesh.
They are,
(i) Inner Line Permit (ILP) and
(ii) Protected Area Permit (PAP).
The Inner Line Permits are required by Indians other than natives of Arunachal Pradesh for entering into any place in Arunachal Pradesh. The ILPs are issued by the Issuing authorities of Government of Arunachal Pradesh with offices at Delhi, Kolkata, Tezpur, Guwahati, Shillong, Dibrugarh, Lakhimpur and Jorhat.
All the foreigners are required have the Protection Area Permit or PAP for entering into Arunachal Pradesh. They can obtain the Protected Area Permit from, All Indian Missions abroad, All Foreigners Regional Registration Officers (FRRO) at Delhi, Mumbai, Kolkata, Chief Immigration Officer, Chennai, Home Ministry, Govt. of India and Home Commissioner, Govt. of Arunachal Pradesh, Itanagar.
Any Domestic tourist coming to Arunachal Pradesh has to obtain an Inner Line Permit. The Permit is granted as a routine for the tourists and so it should not deter any tourist from coming to Arunachal Pradesh. The Inner Line Permit can be obtained from any of the places given below.
