$ cat cards/badge-621-2014/faq/trading-faq-58.md

Can I swap cards across different device accounts?

card: Badge 621 (2014) · category: trading

[Concise Summary]

Yes, the companion supports sharing duplicate strings across different browsers and devices via copy-paste actions.

[Structured Data Grid]

Cross-Device Sync	Manual copy-paste string
State Serialization format	Compressed JSON string
Data Safety Class	Sovereign client-only
Account Requirement	None

Detailed Investigation & Analysis

Checklist progress is stored locally, but you can export duplicate codes to sync binders. Paste checklist strings inside companion tools to sync progress across mobile and desktop.

Additional notes for collectors: Ensure checklist entries are verified before confirming trades. Standard trade ratios are calculated relative to card popularity.

[Album Context Specs]

Card Code	621
Official Name	Badge 621 (2014)
Estimated Value	$0.52 USD
Album Section	Korea Republic (2014)
Completion Mode	Required Checklist Item