In **Stalker 2: Heart of Chernobyl**, PDAs (Personal Digital Assistants) serve as crucial items that provide vital information about the game world. Here’s a detailed overview of what to do with them:

### 1. **Picking Up PDAs**
– **Location**: PDAs can be found lying around in the Exclusion Zone. They are often abandoned and contain useful information.
– **Action**: Walk up to an abandoned PDA and pick it up. This will transfer all the information to your personal PDA, which you can then access through your map, mission log, or notes.

### 2. **Using PDAs for Quests**
– **Quest PDAs**: Some PDAs are crucial for quests and will be marked with a brown tick on them. These PDAs are essential for completing specific missions and cannot be sold or stored.
– **Action**: Use the information from these PDAs to complete your quests. Once the quest is completed, the PDA will automatically disappear from your inventory, freeing up space and weight capacity.

### 3. **Managing Non-Quest PDAs**
– **Information**: Non-quest PDAs contain additional information such as the location of stashes, hidden items, or points of interest.
– **Action**: Once you have picked up the information, you can safely remove the PDA from your inventory. This is necessary for space and weight management in your storage.

### 4. **Selling PDAs**
– **Selling**: If a PDA is not part of a quest, you can sell it to any NPC vendor in the Exclusion Zone. This will give you Coupons, which can be used to purchase items or open up new inventory slots.
– **Note**: Selling PDAs won’t erase the map markings they provided, so you can still access the information even after selling the device.

### Summary
– **Quest PDAs**: Keep them until you complete the associated quest.
– **Non-Quest PDAs**: Pick up the information and then remove them from your inventory.
– **Selling**: If not needed, sell them to vendors for Coupons to free up inventory space.

By following these steps, you can effectively manage your PDAs in **Stalker 2: Heart of Chernobyl** and make the most of the information they provide.