Inventory

Under the tab inventory in your scanner you will find all your items. These can be obtained in 3 ways

Hacking a portal
Passcode redemption
Acquiring an item another agent has dropped

When opening the inventory you will see all your items displayed in a carrousel like display. They can be filtered to show only a certain type (more info on the different kinds of item can be seen in the sections below).

There is a limit to how many items your inventory can hold. That limit is set at 2000. Having 2000 or more will prevent you from getting any items via the 3 ways mentioned above.

To free up space there are 2 possibilities

Recycle - This will eliminate the item and you will receive a certain amount of XM

Drop - This will drop the item at your current location and any other player (friendly or enemy) can pick it up. Items not picked up after 12 hours will disappear.

Media

Media are clues that can only be obtained via hacks or picking up dropped items. They are either new elements of the story or the latest Ingress Report

For a list of media found please check here

Recycling a media item grants you 20 XM per media level

Mods

Each portal can have up to 4 mods on it. For you to deploy a mod in a portal, that portal has to belong to your faction, and have at least a free slot. Each player can deploy up to 2 mods per portal. The mods are not removable unless you were the one to do place it.
Mods can affect the following Portal stats depending on what kind of mod is used

Mitigation (capacity of the shields) - Shields
Attack Power - Force Amp
Number of attacks - Turret
Cooldown time (time required between hacks) - Heat Sink
Amount of hacks (amount before the portal burns out) - Multi Hack
Link distance - Link Amp

With the addition of each repeating mod to the same portal it's effect strength is smaller.

If a faction loses control of a portal all the mods on it will disappear.

Mods have so far come in 3 kinds of rarity