I've found creative ways to shrink down the cashu invoice to fit on our small A-Chips. Works great
NFC/Contactless Spending OFFLINE PHYSICALLY
(reloading need wallet+internet and Merchant PoS NFC+Online LN-based )
SATSCARD by Coinkite nostr:npub1az9xj85cmxv8e9j9y80lvqp97crsqdu2fpu3srwthd99qfu9qsgstam8y8
BOLTCARD boltcard.org / CoinCorner
Cashu 🥜🌰 Giving / Sending OFFLINE
(mint need2ONLINE when claiming + Many variations of cashu/ecash MINTS n wallets)
Discussion
nice - ok share a demo screen later