diff --git a/cyberpunkunicorn-os/apps/frequency/card.cpp b/cyberpunkunicorn-os/apps/frequency/card.cpp
index dde72b9..a26882c 100644
--- a/cyberpunkunicorn-os/apps/frequency/card.cpp
+++ b/cyberpunkunicorn-os/apps/frequency/card.cpp
@@ -344,7 +344,8 @@ CardStatus waitCard(
 CardStatus writeCard(const String &uri, CardInfo &out) {
     if (!held || !rfid) return CARD_NO_READER;
     CardInfo before;
-    if (!selectCard(200) || readFull() != RFIDInterface::SUCCESS) return CARD_NONE;
+    // The card was just seen: losing it here is a slipped card, not an empty reader.
+    if (!selectCard(200) || readFull() != RFIDInterface::SUCCESS) return CARD_WRITE_FAILED;
     fill(before);
     if (!before.ntag) return CARD_NOT_NTAG;
     if (before.locked) return CARD_LOCKED;
diff --git a/cyberpunkunicorn-os/apps/remote/app_handlers.cpp b/cyberpunkunicorn-os/apps/remote/app_handlers.cpp
index df8d873..b3a5f6f 100644
--- a/cyberpunkunicorn-os/apps/remote/app_handlers.cpp
+++ b/cyberpunkunicorn-os/apps/remote/app_handlers.cpp
@@ -134,9 +134,13 @@ void cmdWriteTag(remote::Request &r) {
     if (!u.ok) return r.fail("bad_url", u.problem.length() ? u.problem : String("not a Frequency URL"));
     freq::CardInfo card;
     if (!tap(r, card)) return;
-    freq::CardStatus s = freq::writeCard(u.fixed, card);
+    // A phone or bank card answers the tap but can't hold a link: say so, not "No card".
+    freq::CardStatus s = card.ntag ? freq::writeCard(u.fixed, card) : freq::CARD_NOT_NTAG;
     freq::readerClose();
-    if (s != freq::CARD_OK) return r.fail("write_failed", freq::cardStatusText(s));
+    if (s != freq::CARD_OK) {
+        Serial.printf("[freq] write: %s (tapped %s, %s)\n", freq::cardStatusText(s), card.type.c_str(), card.uid.c_str());
+        return r.fail("write_failed", freq::cardStatusText(s));
+    }
     freq::logWrite(label, u, card.uid, false);
     putCard(r.data, card);
     r.data["written"] = u.host + u.path; // no query: the signature stays out of logs
diff --git a/cyberpunkunicorn-os/build.sh b/cyberpunkunicorn-os/build.sh
index c3fbf61..b5a565c 100755
--- a/cyberpunkunicorn-os/build.sh
+++ b/cyberpunkunicorn-os/build.sh
@@ -9,7 +9,7 @@ PIO_ENV=CYD-2432S028
 PLATFORMIO_VERSION=6.2.0
 ESPTOOL_VERSION=5.4.0
 OS_NAME="CyberUnicorn 5000"
-OS_VERSION=0.1.5
+OS_VERSION=0.1.6
 
 source ./boot.conf
 for var in BOOT_TITLE BOOT_TAGLINE; do