Even if I agreed with customs officers rifling through my devices, I would only ever want them to have read-only access. Like, you'd hope they're not malicious

Even if I agreed with customs officers rifling through my devices, I would only ever want them to have read-only access. Like, you'd hope they're not malicious, but can you really trust some in-a-hurry agent with little to no training in this area to not accidently wipe half your hard drive?