Which retail innovation first allowed presidential campaigns to process small donations via text message, significantly expanding grassroots fundraising capabilities?

Throughout history, political campaigns have leveraged retail strategies and consumer trends to reach voters effectively. From merchandise to digital outreach, campaigns have become sophisticated marketing operations. Test your knowledge about a groundbreaking retail innovation that transformed political fundraising and supporter engagement in recent presidential campaigns.

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Square card readers at campaign rallies (2012)
FEC-approved SMS donations (2012)
Campaign-specific cryptocurrency wallets (2016)
Venmo integration on campaign websites (2016)